NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | Economics IMPORTANT QUESTIONS | CHAPTER –4 Poverty| EDUGROWN |

NCERT Most important question:

Question 1. Define poverty.
Answer. Poverty in India has been defined as that situation in which an individual fails to earn income sufficient to buy him minimum means of subsistence.

Question 2. What is meant by ‘Food for Work’ programme?
Answer. National Food for Work Programme (NFWP). This programme was initially launched w.e.f. February 2001 for five months and was further extended. This programme aims at augmenting food security through wage employment in the drought affected rural areas in eight States, i.e., Gujarat, Chhattisgarh, Himachal Pradesh, Madhya Pradesh, Maharashtra, Orissa, Rajasthan and Uttaranchal. The centre makes available appropriate quantity of foodgrains free of cost to each of the drought affected States as an additionality under the programme. Wages by the State government can be paid partly in kind and partly in cash. The workers are paid the balance of wages in cash, such that they are assured of the notified minimum wages.

Question 3. State an example each of self-employment in rural and urban areas,
Answer. PMRY is a self-employment programme in rural areas.
SJSRY is a self-employment programme in urban areas.

Question 4. How can creation of income earning assets address the problem of poverty?
Answer. With the creation of income earning assets, people will have a way to earn their livelihood. It will help in removal of poverty.

Question 5. Briefly explain the three-dimensional attack on poverty adopted by the government.
Answer. A country is caught in a vicious trap once poverty is inbuilt in the system. The government has followed three-dimensional poverty removal programme. These dimensions are:

  1.  The rate of economic growth should be raised. Economic growth can be helpful in removing poverty by the trickle down effect. It was felt that raised economic growth would benefit the underdeveloped region and the more backward sections of the society.
  2.  Various beneficiary-oriented programmes need to be strengthened. For this, local institutions have to be involved in these programmes. The activities should be organised on a co-operative basis. Major training programmes should be taken up to improve the skills of potential workers.
  3.  To provide minimum basic amenities. The provision of basic anenities should be made like water supply, sanitation, nutrition, etc. to the people.

Question 6. What programmes has the government adopted to help the elderly people and poor and destitute women?
Answer.

  1. National Social Assistance Programme (NSAP). NSAP was introduced on 15 August, 1995 as a 100 per cent Centrally Sponsored Scheme for social assistance to poor households affected by old age, death of primary bread earner and maternity care. The programme has three components, i.e., N ational Old Age Pension Scheme (NOAPS), National Family Benefit Scheme (NFBS) and National Maternity Benefit Scheme (NMBS).
  2. Annapurna. This scheme came into effect from April 1, 2000 as a 100 per cent Centrally Sponsored Scheme. It aims at providing food security to meet the requirement of those senior citizens who though eligible for pensions under the National Old Age Pension Scheme, are not getting the same. Foodgrains are provided to the beneficiaries at subsidised rates of Rs. 2 per kg of wheat and Rs. 3 per kg of rice. The scheme is operational in states and 5 union territories. More than 6.08 lakh families have been identified and the benefits of the scheme are passing on to them.

Question 7. Is there any relationship between unemployment and poverty? Explain.
Answer. Unemployment means lack of living. It leads to hunger, gloom, pessimism, indebtedness, etc. They all are signs of poverty.

Question 8. What is the difference between relative and absolute poverty?
Answer.
Poverty NCERT Solutions for Class 11 Indian Economic Development Q8

Question 9. Suppose you are from a poor family and you wish to get help from the government to set up a petty shop. Under which scheme will you apply for assistance and why?
Answer. The assistance can be given by Aajeevika. In this scheme one can get financial help in the form of bank loans. Other Programmes which can provide help are:

  1.  REGP (Rural Employment Generation Programme)
  2.  PMRY (Pradhan Mantri Rctegar Yojana).

Question 10. Illustrate the difference between rural and urban poverty. Is it correct to say that poverty has shifted from rural to urban areas? Use the trends in poverty ratio to support your answer.
Answer. In the rural areas, poor people are those who are landless agricultural labourers, small and mar¬ginal farmers. In the urban areas, poor people are those who are unemployed, underemployed or employed in low productivity occupations with very low wages.
Rural-Urban Break-up of Poverty Following pattern emerges:

  1.  The decline in poverty was comparatively much steep in rural areas where the percentage
    of people living below poverty line fell to 33.8 per cent (2009-10) from 41.8 per cent (2004-05).
  2. In urban areas, percentage of people living below poverty line fell to 20.9 per cent (2009-10) from 25.7 per cent (2004-05).
  3.  The number of people living below poverty line was estimated at 354.7 million in 2009-10.

Question 11. Explain the concept of relative poverty with the help of the population below poverty line in some states of India.
Answer. Relative Poverty refers to poverty in relative terms. It refers to poverty of people in comparison to other people, regions or nations. It indicates that a group or class of people belonging to the lower income groups is poorer when compared to those belonging to higher income groups. Among the major states, percentage of people living below poverty line was 37.9 per cent in
Assam, 23.0 per cent in Gujarat, 20.1 per cent in Haryana, 23.6 per cent in Karnataka, 36.7 per cent in Madhya Pradesh, 24.8 per cent in Rajasthan and 26.7 per cent in West Bengal in 2009-10.

Question 12. Suppose you are a resident of a village, suggest a few measures to tackle the problem of poverty.
Answer. Some measures that can be taken are:

  1.  Making people aware about benefits of sanitation.
  2.  Telling people about various programmes of the government.
  3. Helping people to take loan and get self employed.
  4.  Keeping a control on growth rate of population.
  5.  Helping people to start small scale and cottage industries which would generate employment.
Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | Economics IMPORTANT QUESTIONS | CHAPTER –3Liberalisation, Privatisation and Globalisation: An Appraisal| EDUGROWN |

NCERT Most important question:

Q1. What is the other name of the World Bank? 

a) Federal Bank 

b) ICICI 

c) IBRD 

d) Bank of America 

Ans: (c) The International Bank for Reconstruction and Development is another name for the World Bank. The International Bank for Reconstruction and Development is its new name.

Q2. What is meant by disinvestment? 

Ans: Disinvestment is the sale or liquidation of an asset or subsidiary by an organization or government. During disinvestment, the government company typically retains 26 percent or 51 percent of the stock, while the rest of the share is transferred to the concerned strategic partner.

Q3. What are the things included in foreign investment? 

Ans: Foreign investment includes both FDI (foreign direct investment) and FII (foreign institutional investment) (foreign institutional investment).

Q4. What are the sources of direct taxes? 

Ans: Direct taxes are those in which the burden cannot be transferred to others. Income tax, corporate tax, gift tax, and so on.

Q5. What is meant by WTO? 

Ans: The World Trade Organization (WTO) was established in 1995 as the successor organization to the General Agreement on Tariffs and Trade (GATT). The World Trade Organization (WTO) is expected to establish a rule-based trading regime in which nations cannot impose arbitrary trade restrictions.

Q6. Industrial growth in India has recorded a slowdown in the period of economic reforms. What are the reasons for this? 

a) Decreasing demand of domestic industrial products 

b) Globalisation 

c) India does not have access to different markets because of high non-tariff barriers. 

d) All the above 

Ans: (d) All of the above. 

Q7. Which of the following are correct regarding growth during the reform period? 

a) The growth of agriculture declined. 

b) The service sector reported fluctuation. 

c) The growth of industrial sectors has gone up. 

d) The growth during this phase was mainly driven by the growth in the service sector. 

Ans: Both (a) and (d) are correct. 

Q8. Give the meaning of Privatisation. 

Ans: Privatization refers to the process of transferring a business or industry from the public to the private sector. This is known as denationalization and destatization.

Q9. What is meant by Globalisation? 

Ans: Globalisation entails the transformation of local and nationalistic perspectives into a broader perspective of an interconnected and interdependent world with free capital, goods, and services transfer across national borders.

Q10. For which contribution is PC Mahalanobis regarded highly by statisticians and economists all over the world? 

Ans: Prasanta Chandra Mahalanobis is widely regarded as the “Father of Indian Statistics” because of his guidance to the evolution of statistical studies which acts as a vital tool for policy planning or we can say as an architect of developmental planning.

Q11. What benefit goes to domestic Industries of reduction in tariff? 

Ans: The main advantages are that imports have become less expensive and that profit margins on exports have increased for domestic industries.

Q12. What are the indirect taxes? Give two examples. 

Ans: These are taxes that are levied indirectly on the individual’s expenses rather than directly on his or her income. Service tax, excise and customs duty, VAT, entertainment tax, and so on. The majority of taxes are now merged and referred to as GST (goods and service tax).

Q13. Why in India, Industrial sector growth has lowered down? 

a) Due to availability of cheaper imports and lower investment 

b) Income of public has increased 

c) Exports are giving good response 

d) Manpower has decreased in industries 

Ans: (a) Due to availability of cheaper imports and lower investment, industrial growth has interrupted. 

Q14. What is fiscal policy? 

Ans: Fiscal policy is the process by which a government adjusts its spending levels as well as taxes  in order to monitor & influence the economy of the nation. It is a monetary policy strategy in which a central bank influences a country’s money supply. Tax cuts and increased government spending are two major examples of expansionary fiscal policy.

Q15. State the meaning of economic reforms. 

Ans: It refers to the policies that are implemented to ensure competitive markets, increased production efficiency, and rapid economic growth.

Q16. What are the impact of economic reforms on agriculture? 

       Or 

Consider the impact of economic reforms on agriculture. 

       Or 

Examine the impact of economic reforms on agriculture in India. 

Ans: Economic reform has had a mixed impact on agriculture. In terms of food grains, India has achieved near self-sufficiency. Both the green revolution and agricultural liberalization in India have had a positive impact on both overall and agricultural GDP. Agriculture was expected to remain the most important sector of the economy in terms of GDP proportion for the rest of the decade in the mid-1990s. Even if agriculture is not the largest contributor to GDP, its importance is unlikely to diminish due to its critical role in providing food, wage goods, employment, and raw materials to industries. Despite their preoccupation with industrial development, India’s planners and policymakers were forced to recognize agriculture’s critical role in the early 1990s by changing basic policy. Gains in agricultural production should not be mistaken for complacency.

Q17. Throw some light on Sircilla Tragedy. 

        Or 

What is the Siricilla Tragedy? 

Ans: Andhra Pradesh’s Siricilla is a well-known handloom industry center in India. The Siricilla Tragedy refers to the suicide of 50 handloom workers, which shocked the country. The power loom weavers of Siricilla textile town in Karimnagar district, who have yet to recover from the impact of FSA (Fuel Surcharge Adjustments), are now facing a crisis of unemployment and power loom closures, with traders cutting off raw material supplies due to the rise in the price of polyester yarn. Suicides among weavers and owners of power looms are not uncommon. In terms of price, quantity, or quality, the Siricilla power looms could not compete with these modern looms. Sales fell and stocks rose, as did the amount of interest owed on bank loans. According to Siricilla, there are two types of looms: power looms and handlooms. Materials worth over Rs.2 crores are said to have been lying in godowns for the last two years.

Q18. Is India able to show its global footprint? 

        Or 

How much do you know about India’s global footprint? 

Ans: After several years of turbulence and volatility in the global economy, signs of growth and stability can be seen. The International Monetary Fund expects global growth to accelerate to around 3.5 percent over the next two years, led by emerging economies. At the same time, political conditions appear to be shifting, and there is a distinct anti-globalization sentiment. Many Indian companies expanded their wings to other countries after globalisation began in India. Many Indian private and public companies, such as ONGC Videsh, Tata Steel, Birla Group, Adani Group, Reliance, and others, now have a global presence. Global growth conditions have become a critical factor in India’s progress. The recent subdued environment has had a direct impact on our growth story. This is a difficult time for Indian industry, which is looking to international markets for both trade and investment opportunities. Despite all of the obstacles on the domestic front caused by infrastructure gaps and financing issues, Indian industry is eager to integrate itself into the dynamic global value chain. The government is actively promoting India’s international relations. Prime Minister Narendra Modi has visited over 50 countries and signed a number of agreements aimed at increasing trade and investment. Defence has emerged as a key sector of cooperation, as India has liberalized its defense manufacturing sector and is encouraging global majors to participate in order to help it develop into a manufacturing hub for defense equipment equipped with relevant technologies. Such interactions expand Indian industry’s global footprint. As the world adjusts to new realities, India has the opportunity to expand its presence in a variety of manufacturing and service sectors.

Q19. What are the Navratnas Companies of India? 

Ans: In 1997, the government conferred the Navratna status on nine Public Sector Enterprises (PSEs). Thus, they’ll have more freedom to compete in the global market because they will be supported in their quest to become global giants. There are currently 17 companies with the Navratna status. To name a few, Bharat Heavy Electricals (BHEL), HAL, NTPC, Oil India Ltd, MTNL, and others. In 1997, the government launched the Navratna scheme to identify CPSEs with comparative advantages and support them in their quest to become. The following are the requirements for obtaining the Navratna status: 

(a) The company must achieve a minimum score of 60 out of 100 on various parameters such as net profit and net worth, total manpower cost as well as total cost of production, cost of services, PBDIT (Profit Before Depreciation, Interest, and Taxes), capital employed, and so on.

(b) It must have Miniratna status.

(c) Its board should include at least four independent directors.

(d) The company must spend up to Rs. 1,000 crore, or 15% of its net worth, on a single project or 30% of its net worth for the entire year (not exceeding Rs. 1,000 crores).

Q20. What is India’s export – import policy? 

Ans: The Central Government develops and announces foreign trade policy (Ministry of Commerce). Foreign Trade Policy, also known as EXIM Policy, is a set of guidelines as well as instructions established by the DGFT i.e Directorate General of Foreign Trade in matters pertaining to goods import and export in India. In 2015, foreign trade accounted for 48.8 percent of India’s GDP. Indian EXIM Policy encompasses various policy decisions made by the government in the field of Foreign Trade, specifically with regard to imports and exports from the country, as well as export promotion measures, policies, and procedures. Export is known as the sale of goods & services to other countries, whereas import refers to the purchase of goods and services from other countries. In this day and age of globalization, no economy can afford to be isolated from the rest of the world. All developed and developing economies rely heavily on exports and imports for economic development. With the expansion of international organizations such as the World Trade Organization, UNCTAD, ASEAN, and others, global trade is expanding at a rapid pace. The current policy is known as the India New Foreign Trade Procedure 2015-2020 or the India New Foreign Trade Policy (Exim Policy) 2015-2020.

Q21. Explain briefly the merits and demerits of the economic reforms introduced in 1991. Or What are the pros and cons of economic reforms of India? 

Ans: The year 1991 is significant in the economic history of post-independence India. The country experienced a severe economic crisis as a result of a serious Balance of Payments situation. The crisis was used to introduce some fundamental changes in the content and approach to economic policy. As a response to the crisis, the policies aimed at stabilisation and structural reform were implemented. Former Prime Minister Manmohan Singh is widely regarded as the father of India’s New Economic Policy. The thrust of the NEP i.e New Economic Policy has been to create a more competitive environment in the economy in order to improve the system’s productivity and efficiency. This was to be accomplished by removing entry barriers and restrictions on firm growth.

New Economic Policy is of three types:

1. Liberalisation

2. Privatisation

3. Globalisation

Strengths of New Industrial Policy, 1991: 

The economy is said to enter into a new phase which is described as “reform by storm,” replacing the approaches of “reform by stealth” in the latter half of the 1970s and “reform with reluctance” in the second half of the 1980s.

  • The New Industrial Policy, through various provisions, set fire to the industrial licensing system. A shift away from extensive physical controls has occurred, with a greater emphasis on the role of financial incentives in channeling investments in the desired direction.
  • Significant internal deregulation is taking place in order to strengthen more efficient domestic firms and encourage them to invest and expand.
  • Efforts have also been made to strengthen the legal framework. The SARFAESI Act, 2002 i.e Securitisation, Reconstruction of Financial Assets, and Enforcement of Security Interest Act of 2002, empowers the banks as well as financial institutions in order to enforce their claims on collateral for delinquent secured credit without going through a lengthy as well as time-consuming legal process.
  • One distinguishing feature of India’s policy reform process is that it is gradualist, as opposed to the “big bang” approach used in some other countries. The system is facing much greater pressures for efficiency and modernization, but at a slower pace.

Major Weaknesses of New Industrial Policy, 1991: 

  • With limited export incentives and regulated labor markets, there appears to be little reason to believe that today’s infants will provide a growth engine consistent with current targets.
  • There is concern about the slow pace of investment in many fundamental and strategic industries such as engineering, power, machine tools, and so on. This is primarily due to the low rate of return in these sectors, which is lower than the rate of return in new or “sunrise” industries (e.g. IT sectors).
  • Restructuring and modernization of industries as a result of the new industrial policy frequently results in labor displacement. This would necessitate the redeployment of labor through rehabilitation programs.
  • A focus on internal liberalisation without a sufficient emphasis on trade policy reforms resulted in ‘consumption-led growth’ rather than ‘investment-led growth’ or ‘export-led growth.’ As a result, the resulting growth process was not long-term sustainable.
  • The liberalisation policy appears to have failed to achieve one of its main goals, namely the creation of more innovative firms.

Q22. Define the term outsourcing. How much has India benefited? 

Or 

Outsourcing has created a lot of employment opportunities in India. Give arguments in favour of this statement. 

Ans: Because of its ability to adapt to changing needs, India remains the leading outsourcing destination. According to NASSCOM, (National Association of Software and Service Companies), the apex body of India’s premier IT software and service (IT & BPO) companies, India’s share of the global outsourcing market increased from 51% in 2009 to 55% in 2010. India continues to stand out for its customer service and efficiency, so its future looks promising.

(Image will be uploaded soon)

Following Points Focus Why India is First Choice in Outsourcing World: 

  • Customers today seek not only cost-effective solutions for their outsourced business, but also skilled personnel, increased productivity, service quality, and business process excellence. With its large population and multi-skilled workforce, India will continue to be favored for both backend and front-end outsourcing.
  • Outsourcing is known as the business practice of hiring a third party to perform the services as well as create goods that were used to perform in-house
  • India continues to be unrivaled with respect to its skilled as well as talented human resources. It has a population of over 1.2 billion people, and each year, approximately 3.1 million graduates enter the labor force. India is also the world’s largest English-speaking country, larger than the United States and the United Kingdom combined.
  • The significant cost savings in the country that companies can achieve is one of the reasons why India remains a top outsourcing provider. This is primarily due to the large disparity in personnel costs between India and developed countries. In the United States, for example, a good developer can charge between 50and50and80 per hour (for a full-time staffer depending on skills and experience). In comparison, the hourly rate of the developer  in India can be negotiated down to as low as $15/hour.
  • While cost is an important factor in outsourcing, the consistently high quality provided by Indian outsourcing firms has also allowed India to maintain its position as the top outsourcing destination. In its Annual Offshore Outsourcing Conference, the National Outsourcing Association (NOA) reflected on a common trend among international companies that choose India as their preferred outsourcing destination.
  • The Indian outsourcing industry is considered to be supported by a stable pro-IT government whose economic, GDP growth, taxation, power, telecom, industrial parks, and special zones policies have aided in the improvement of infrastructure and communications systems.
  • The Indian government has aided the IT industry by providing various tax-related and other benefits, as well as enacting the Information Technology Act, which recognizes electronic contracts, prohibits cybercrime, and encourages document e-filing.

Q23. What do you mean by disinvestment? How is it done in public sector enterprises in India? 

        Or 

What is the difference between disinvestment and privatisation? 

        Or 

Do you think loss making enterprises should be privatised? Why? 

Ans: Disinvestment refers to the dilution of the government’s stake in a public enterprise. This can be accomplished in two ways. When the government sells less than 50% of its equity in a public enterprise, it is referred to as disinvestment, and control and management of the business enterprise remain in the hands of the government. Privatisation occurs when the government’s disinvestment or sale of its equity capital exceeds 50%, transferring majority ownership and thus control and management of the enterprise to private enterprise. As a result, in many disinvestment programs, the government retains 51% or more of the total equity capital of public enterprises, retaining control and management. The public sector is underinvesting because the government’s resources are limited. The government requires resources in order to reduce its budget deficit. Second, the government urgently needs resources to invest in infrastructure, social sectors such as education and public health, and poverty-relief programs. Several economists have proposed using the proceeds of disinvestment to retire a portion of the public debt. Disinvestment, particularly privatization of public-sector enterprises, will ensure that their operations are governed by professional managers guided by market mechanisms rather than being administered by bureaucrats.

Disinvestment of Public Enterprises Can be Made in a Number of Ways:- 

  • The entire public enterprise can be sold to the highest bidder or another private sector firm. In this case, the private firm gains ownership as well as control or management.
  • The second method of disinvestment in a public enterprise is to sell a portion of the government stake to a strategic private company. A strategic company is one that has a strategic interest in the public sector and the ability to run it efficiently.
  • Finally, a limited number of government shares in a public enterprise can be sold through an auction of shares among a limited number of private firms. Merchant bankers can help determine the reserve price of a company’s shares for auction.

Q24. What are the major factors responsible for the high growth of the service sector? 

        Or 

Enumerate the Reasons Responsible for the Shining Service Sector of India. 

Ans: The services sector in India encompasses a wide range of activities, including trade, hotel and restaurant operations, transportation, storage and communication, financing, insurance, real estate, business services, community, social, and personal services, and construction-related services. It is not without reason that India’s dominant services sector is referred to as the economic engine. Globalization and increased manufacturing automation have reduced the relative demand for manufacturing jobs in advanced economies. Because of the increased supply, this frees up labor for the service industry and puts downward pressure on wages in the less skilled parts of that sector. More students are opting for degrees in finance and business for higher skilled parts of the service sector, but they are discovering that deregulation of the banking industry has created more high paying opportunities in things like the investment banking segment, rather than being a CFO at a small manufacturing concern.

Major Factors Responsible for the High Growth of the Service Sector in India: 

  • Economic Reforms in 1991: MNCs were able to enter the Indian market after economic reforms were implemented in 1991. It removed restrictions on foreign investment and allowed for the inflow of foreign capital. Foreign direct investment has increased dramatically as a result of the government’s liberalized policy. It brought about a number of changes in the Indian market.
  • Low Labour Cost: India’s labor costs were lower than those of developed countries. This enticed multinational corporations to outsource their business services to India. As a result, the service industry grew rapidly with companies that recognized the value of business outsourcing processes such as training, teaching, and marketing in improving business performance.
  • Growth of Information Technology (IT): The expansion of information technology (IT) in India has greatly aided the growth of the service sector. IT aided the country’s vital service businesses. The country also has a large number of highly skilled software resources. Many state governments, including those in Andhra Pradesh, Madhya Pradesh, Karnataka, Maharashtra, and Delhi, have highlighted the importance of the IT sector.
  • Structural Changes: The Indian economy was undergoing structural changes, such as a shift from the primary to tertiary sectors. The service sector saw an increase in demand as a result of this transformation.
  • Market Orientation: The manufacturing sector experienced numerous changes in the market’s competitive environment and demand-supply forces. This shifted their focus from production to market orientation. Furthermore, it required manufacturing companies to conduct marketing research, accounting, auditing, human resource management, and research and development organizations to analyze market conditions. These were solely service-oriented functions.

Is this page helpful?

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | Economics IMPORTANT QUESTIONS | CHAPTER –2Indian Economy 1950-1990| EDUGROWN |

NCERT Most important question:

Q1. What is the type of economy adopted by India?

a) Communist 

b) Capitalist 

c) Mixed 

d) Socialist 

Ans: (c) Mixed economy is adopted by India.

Q2. What do you mean by the Planning Commission and who is the chairman of this commission? 

Ans: The Planning Commission is an agency of the Indian government that was established in 1950 to oversee the country’s economic and social development. Their primary responsibility is to create five-year plans. The chairman of the committee is the country’s Prime Minister. This commission was abolished in 2014.

Q3. Term HYVP stands for? 

a) High Yielding Varieties Product 

b) High Yielding Various Programme 

c) High Yielding Varieties Programme 

d) High Yielding Various Product 

Ans: (c) High Yielding Varieties Programme 

Q4. Who is the father of a high yielding variety seed? 

Ans: Norman Borlaug, an American agricultural scientist who was awarded the Nobel Peace Prize in 1970 for breeding higher-yielding varieties, is regarded as the father of HYV. He has also been dubbed the “Father of the Green Revolution.”

Q5. Define Economy. 

Ans: A large set of interconnected production and consumption activities that aid in determining how scarce resources are allocated is referred to as an economy. The economy is what allows us to survive and thrive. 

Q6. Planning commission was set up in which year in India? 

a) 5th March, 1951 

b) 25th April, 1951 

c) 20th March, 1951 

d) 15th March, 1950 

Ans: (d) Planning commission was set up on 15th March, 1950. 

Q7. What were the priorities in the 11th five-year plan? 

Ans: Agriculture, infrastructure development, health, and education were the primary focus areas of the 11th five-year plan. 

Q8. What is meant by import substitution in Indian economy? 

Ans: Import substitution industrialization (ISI) is a trade and economic policy that advocates substituting domestic production for foreign imports. ISI is based on the idea that a country should try to reduce its reliance on foreign goods by producing industrialized goods in its own country. Many mechanical, software, instruments, and machines are now being manufactured in our country in order to save crores of rupees in imports. 

Q9. What do you mean by land ceiling? 

Ans: The size of land that an individual or family can own is defined by the land ceiling. This act was passed in India in 1961-62 and was governed by all state governments. However, the ceiling limits differed from state to state. 

Q10. What is the year of India’s twelfth five year plan? 

a) 1997 to 2002 

b) 2002 to 2007 

c) 2012 to 2017 

d) 2007 to 2012 

Ans: (c) The twelfth five-year plan ran from 2012 to 2017.  

Q11. How much percent of India’s population was dependent on agriculture during independence? 

a) 75% 

b) 50% 

c) 85% 

d) 65% 

Ans: (a) 75% of India’s population was dependent on agriculture during independence. 

Q12. Define small scale industries. 

Ans: Small scale industries are those with a fixed investment in plant and machinery, whether owned outright, leased, or hired out, that does not exceed Rs. 1 crore. Paper napkins, facial tissues, candle making kits, wooden toothpicks, and other items are examples. 

Q13. The portion of agricultural produce which is sold in the market by the farmers is called _________. 

a) Trade deficit 

b) Marketed surplus 

c) Subsidy 

d) Import substitution 

Ans: (b) It’s referred to as marketed surplus. It occurred for the first time in India following the successful implementation of the green revolution in the country. 

Q14. Who presented the 1st five year plan of the country? 

Ans: Pandit Jawaharlal Nehru, our country’s first Prime Minister, presented the first five-year plan in parliament. It was first introduced in 1951. 

Q15. What were the focus points of the first and second five year plan? 

Ans: Agriculture was the primary focus of the first five-year plan, but in the second five-year plan, the emphasis shifted to industries.

Q16. What was the aim of five year plans? Or Why did India need five year plans? Or What were the goals of five year plans in our country and how much has been achieved? 

Ans: After gaining independence in 1947, India had to essentially rebuild its economy from the ground up. The leaders of the time will have to decide on the type of economy India would have as well as the economic planning. This is how the five-year plan came to be. These plans are known as five year plans in India because they are made for a period of five years. Each five-year plan is created with a specific goal in mind. A five-year plan has five generalized goals, of which one or two are given the most importance in a specific plan. So, the five types of goals that we cover in our five-year plans are shown below.

Main aims of five year plans:

  • Growth
  • Modernisation
  • Self-reliance
  • Equity

Some of the major accomplishments seen through five-year plans are listed below: 

i. Significant rise in national and per capita income.

ii. Good agricultural development 

iii. Industrial development 

iv. Transportation and communication development 

v. Job creation 

vi. Power and price stability

vii. Scientific and technological advancements

viii Increased capital formation

Q17. Why did India take up a mixed economy? 

Or 

Amidst different types of economies in the world, why does India focus on a mixed economy model? 

Or 

Throw Light On the Mixed Economy Model of India. 

Ans: The country’s leaders faced some difficult decisions in the post-independence era. Most countries in the world followed one of two models at the time: capitalist economy or socialist economy. Jawaharlal Nehru, our first Prime Minister, preferred the socialist model. A pure socialist economy, on the other hand, cannot thrive in a democracy like India. Capitalism was also unsuitable because the government needed to build an economy while also caring for the common man and his needs. As a result, our economy incorporated elements of both socialism and capitalism. It was then decided that India would build a strong socialist society in which the government would care for its citizens. The government, on the other hand, would promote and encourage a strong private sector in the future. With our democracy in mind, there would be no prohibition on private property or wealth. That is why the Indian economy is referred to as a mixed economy because it is neither completely socialist nor completely capitalist. In India, both the private and public sectors operate in the market. Despite the fact that privatization in most sectors did not begin until after 1991, it has provided a significant and much-needed boost to the economy. 

Q18. What are the advantages and disadvantages of the green revolution? 

Or 

What are the drawbacks of the green revolution? 

Or 

Is there any negative side of the green revolution? 

Ans: The green revolution refers to the significant increase in food grain production (such as rice and wheat) as a result of the introduction of high-yielding varieties, the use of pesticides, and improved management techniques. We will now look at the benefits and drawbacks of the green revolution.

Let us Begin With the Benefits of the Green Revolution:

i. It enables large-scale agricultural operations.

ii. It eliminates the need to leave land fallow.

iii. It has the potential to grow any crop in any location.

iv. Job opportunities in the agricultural and industrial sectors are created. 

The Following are Some of the Disadvantages of the Green Revolution:

i. Constant crop replanting without restoring soil health necessitates the use of more fertilizer to keep nutrients in the soil and replenish them.

ii. It has a negative impact on crop production due to soil degradation, which results in decreased production of fruits, vegetables, and pulses.

iii. Small farmers were unable to keep up with the falling price of grains and production because they were unable to afford fertilizers, pesticides, machinery, HYV seeds, and other agricultural inputs, causing them to become poorer.

iv. Excessive use of chemical fertilizer, as reported in some areas, resulted in the destruction of beneficial microorganisms, insects, and worms in soil. 

Q19. What is meant by socialist economy? Elaborate with examples. 

Ans: Socialism is primarily concerned with production in order to meet human needs. Unlike capitalism, where the emphasis is on sale and profit. Socialism entails workers exercising direct control and management of industries and social services through a democratic government based on their national economic organization. Karl Marx and Fredric Engles first introduced the concept of socialism in their book, ‘The Communist Manifesto.’ A socialist system is exemplified by the former Soviet Union. Denmark, Finland, Norway, and Ireland are all examples of socialist countries. Cuba is an excellent example. Its economy is run by the government, and there is no stock exchange. Healthcare and education are completely managed and administered by the government. 

Q20. What is the policy of ‘land to the tiller’? 

Or 

Have you heard about land tiller policy? What is it? 

Ans: The adage “land to the tillers” means that the person who works for something should reap the benefits and rewards. The Act, which has been previously restricted to owning property only for government projects, has been amended several times to broaden the definition of public purpose, so that land can now be acquired for any project and by anyone. The concept of “land to the tiller” is beneficial because it, above all, provides an incentive to the person who ploughs the land. It inspires the hardworking individual to work even harder.

Q21. Explain the Green Revolution in brief. 

Or 

Why is the term Green Revolution so famous? 

Or 

Write a Short Note on the Green Revolution. 

Ans: Food is the most basic requirement for all living creatures on this planet to survive. It is the source of energy used by living organisms for their growth, development, and work.

The Green Revolution was a scientific breakthrough in grain cultivation. It put genetic engineering, chemical fertilizers, and pesticides into use. It introduced fantastic farming technology. The Green Revolution in India refers to the period when agriculture in India transitioned to an industrial system as a result of the adoption of modern methods and technology such as high yielding variety (HYV) seeds, tractors, irrigation facilities, pesticides, fertilizers, and so on. Norman Borlaug pioneered the green revolution. India is self-sufficient in food production solely due to modern agricultural practices. The Green Revolution of the 1960s was a watershed moment in Indian history. The need for a new agricultural strategy arose as a result of the need to increase agricultural production in the face of production stagnation and rapidly rising demand. It was initially implemented over a total area of 1.89 million hectares. The coverage had grown to 9.2 million hectares on the eve of the Fourth Plan. In 1989-1990, the total area was 63.8 million hectares, accounting for nearly 35% of gross cropped area.

The Main Components of Green Revolution are as Follows:

(i) Better pesticides

(ii) High yielding

(iii) Better ignition

(iv) Land reforms

(v) Command Area Development (CAD) 

(vi) Rural electrification

(vii) Farm mechanization

(viii) Rural roads and marketing

Agriculture production is slow, and investment is also insufficient. Even after the so-called success of the Green Revolution, India’s production is far below that of the international structure. The actual yield of groundnut is 9.1 quintal per hectare, which is one-third of the world’s highest yield rate. Thus, even after the Green Revolution, India’s acre-wise productivity remains significantly lower than the international standard. However, India has surpassed the United States to become the fourth-largest wheat producer. The reality is that after the rural works programs and the course of actions, the middle and lower strata of rural society can benefit, if not the upper strata. The middle strata benefited greatly due to the size of their holdings. They became viable as a result of their entrepreneurial spirit. This emerging middle-income group gained more motivation to engage in additional economic activities. They imbibed zeal and confidence and could be a source of inspiration for others, emerging as a new leader in a society dominated by previously affluent classes. If the development process is democratic, this new leadership can take the necessary steps to usher in new developmental activities in rural society for the grass roots level. The new initiatives have the potential to spark a new wave of economic development in rural areas.

Q22. What are the general problems of an economy? 

Or 

Throw some light on the central problems of the economy. 

Or 

“Whenever the problems of choice and scarcity arise, economics is said to emerge”. Discuss some of the problems of the economy. Drones are airborne devices that are used in agriculture to improve crop output and to track crop growth.

They assist farmers in developing agricultural field systems for using water, fertilisers, herbicides, and seeds. These tools have revolutionised agriculture by allowing farmers to save significant amounts of money while also increasing efficiency and profitability.

Ans: The below-designed module can help us understand the economy’s problems. Green Revolution Components Reforms to the Land Marketing and rural roads Agricultural mechanization Command Area Development (CAD) for Rural Electrification.

(Image will be uploaded soon)

Now We Will Concentrate on Better Understanding the Problems:

  • The basic economic problem is one of scarcity of resources, which causes a problem of choice. It is also referred to as the resource economisation problem, which refers to the issue of making better and more efficient use of limited resources in order to satisfy the greatest number of wants.
  • The main causes of central problems are unending human desires, limited economic resources, and alternative resource uses.
  • One of the most important issues that every economy faces is resource allocation.: – 

(I) What should be produced and how much should be produced?

(ii) How do you produce?

(iii) For whom should the product be produced?

  • What to produce: An economy has unlimited wants but limited means that can be used in other ways. The economy cannot produce all types of goods such as consumer goods, producer goods, and so on. As a result, the economy must decide what types of goods and services to produce and in what quantities.
  • How to Produce: This is a problem of selecting a manufacturing technique. There are two production methods.

(a) Labour-Intensive Technique: This is a production technique in which labor is used more than capital. 

(b) Capital-Intensive Technique: Capital is used more than labor in this technique.

  • For whom to produce: This is a problem related to the distribution of produced goods among various groups in society. It has two components: – 

(i) Individual distribution

(ii) Distribution of functionalities Personal distribution: When national income is distributed based on who owns the factors of production.

When the national income/production is distributed among different factors of production such as land, labor, capital, and entrepreneurship for providing their services in terms of rent, wages, interest, and profit, this is referred to as functional distribution. 

  • A problem Related to the Efficient Use and Full Utilization of Resources: Production efficiency means producing the greatest amount of goods and services possible with the available resources. Because resources are already scarce in comparison to the demand for them, an economy must ensure that its resources are not underutilized; underemployment is nothing more than resource waste.
  • Resource Growth Problem: It is related to an increase in the economy’s production capacity, which causes the quantity of production to increase. 

Q23. Though the public sector is very essential for industries, many public sector undertakings incur huge losses and are a drain on the economy’s resources. Discuss the usefulness of public sector undertakings in this light of the fact. 

Or 

Explain the rationale of public sector enterprises. 

Or 

What is the role of public sector enterprises in India? 

Ans: In India, a public sector company is one in which the Union Government, a State Government, or a Territorial Government owns 51 percent or more of the stock. Currently, only three sectors remain exclusively reserved for the government, namely railways, atomic energy, and explosive materials. Private companies are not permitted to operate in these sectors. Until the 1990s, major sectors of the economy were reserved solely for the government, resulting in a significant loss of our precious natural resources and trapping the entire country in a major economic problem. From the first five-year plan to the 1980s, our country grew at a rate of 3.5 percent per year on average. 

Profitable public-sector enterprises are the government’s primary source of revenue for special welfare programs. This enables the public to promote income and wealth distribution equality. PSUs with a social mission, such as railways, water supply, and postal services, should be kept in the public sector. Profitable industries should be kept in the public sector only because their resources can be used for development. The government should retain strategic industries in order to avoid the formation of monopolies in the private sector.

Role of Public Sector Enterprises in India

  • Maximizing the rate of economic growth
  • Balanced regional development
  • Agricultural development
  • Increased employment opportunities
  • Import substitution

Governance of Public Sector Undertakings:

The following are the important roles and responsibilities of the Public Sector Department: 

  • General public policy.
  • Issues pertaining to the issuance of Presidential Directives and guidelines to Public Sector Enterprises.
  • Policy guidelines for Public Sector Companies in areas like performance improvement and evaluation, financial management, personnel management, board structures, wage settlement, training, industrial relations, vigilance, and performance appraisal, among others.
  • Issues concerning the reservation of positions in public-sector enterprises for specific groups of citizens.
  • All issues pertaining to the Memorandum of Understanding between Public Sector Enterprises and administrative Ministries/Departments.
  • Issues pertaining to the delegation of powers to the Board of Directors.
  • To conduct in-depth studies on key areas of Central PSE operation. • Concerns about the International Centre for Public Enterprises (ICPE) – External website that opens in a new window.
  • SCOPE (Standing Conference of Public Enterprises) – External website that opens in a new window
  • Monitoring and evaluating the performance of PSEs, serving as a data repository, and producing an annual survey for the Parliament.
  • Permanent Arbitration Mechanism for resolving disputes between public sector enterprises and Government Departments, excluding tax disputes; • Appraisal of proposals from various administrative Ministries pertaining to restructuring, revival, joint venture, and so on. Increasing the rate of economic growth as much as possible Regional development that is balanced Agriculture advancement expanded employment opportunities Substitution of imports
  • DPE Guidelines – This is an external website that will open in a new window.
  • Economic Affairs Department – External website that opens in a new window
  • Expenditure Department – External website that opens in a new window
  • Standing Conference Of Public Enterprises (SCOPE) – External website, which will open in a new window.

Q24. Construct a pie chart on the occasional structure of the Indian economy available in the following table:

Sector1950-511990-912017-18
Agriculture75.265.345
Industry11.814.525
Services1320.230

Ans: For this, we will create different pie charts based on the year.

Pie-chart for 1950-51

(Image will be uploaded soon)

Pie-chart for 1990-91

(Image will be uploaded soon)

Pie-chart for 2017-18

(Image will be uploaded soon)

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | Economics IMPORTANT QUESTIONS | CHAPTER –1Indian Economy on the Eve of Independence| EDUGROWN |

NCERT Most important question:

Q1. When was the first census data collected during British India?

a) 1882

b) 1881

c) 1981

d) 1985

Ans: (c) 1881

Q2. What is Muslin?

Ans: Muslin is a high-quality cotton fabric that is widely available nowadays. Malmal is the finest form of muslin and is claimed to be the purest fabric in the world. The name ‘Muslin’ is claimed to have originated in the British Indian port town of ‘Maisolos’. People in Dhaka (now in Bangladesh) used to hand-weave it from fine hand-spun yarn.

Q3. What is commercialisation of agriculture and when did it begin?

Ans: Commercialisation of agriculture is an occurrence in which agriculture is governed by commercial reflection. In general, certain essential crops began to be grown for sale in national and international markets rather than for consumption in the village. Commercialization of agriculture in India began under British rule.

Q4. What was the life expectancy during British India and what is it today?

Ans: According to government statistics, the average life expectancy in British India was 32 years. It has now been 69.27 years.

Q5. What was the importance of the Suez Canal during British India?

Ans: The Suez Canal, which opened in 1869, drastically reduced the cost of goods transportation between Britain and India.

Q6. What is GDP in economics?

Ans: The Gross Domestic Product deals with the value of economic activity of a country. It is equal to the total expenditures for all final goods and services produced within the country in a stipulated period of time. In 2017, India’s Gross Domestic Product (GDP) was valued at 2597.49 billion US dollars. India’s GDP accounts for 4.19 percent of the global economy.

Q7. When were Railways introduced in India?

a) 1830

b) 1860

c) 1900

d) 1853

Ans: (d) The year 1853 marked the beginning of railways in British India.

Q8. Iron and steel industries began coming up in which year?

a) 19th Century

b) 17th Century

c) 14th Century

d) 20th Century

Ans: (d) The 20th Century has seen the beginning of the Iron and steel industries in India.

Q9. What was the infant mortality rate of British India?

Ans: In British India, the infant mortality rate was 218 per thousand, which was fairly high.

Q10. Which are the industries that were adversely affected due to partition of India?

Ans: After partition, the Jute and Textile Industries were the badly affected ones.

Q11. Name some individuals who tried to estimate colonial India’s per capita income.

Ans: Findlay Shirras, Dadabhai Naoroji, William Digby, V.K.R.V. Rao, and R.C. Desai were among those who attempted to estimate such figures. Despite the inconsistencies in the results, V.K.R.V. Rao’s estimates are considered accurate.

Q12. What were the motives behind deindustrialization by Britishers in India?

Ans: The two primary motives behind deindustrialization where to obtain superior quality raw materials at an extremely modest rate from India and to sell machine-made imported western goods at an exceptionally high rate in the Indian market.

Q13. What is export surplus?

Ans: The amount of goods and services that a country exports that are in excess quantity as compared to that of the amount of goods and services with it imports from outside its geographical boundaries is called an export surplus.

Q14. How did export surplus lead to economic drain of wealth during colonial rule?

Ans: In a sense, whatever surplus India procured through excess exports, was redirected to colonial Britain under different expenses, for example, military payment, “home charges”, interest payments or remittances of British residents and officials in India to Britain.

Q15. What percentage of labour were employed in the manufacturing and service sector in pre independent India?

Ans: In pre-independence India, manufacturing employed 10% of the workforce, while the service sector employed 18%.

Short Answer Questions                                                                       (3 or 4 Marks)

Q16. What was the motive behind the deindustrialization by the colonial Govt. in India?

or

What was the two-fold motive behind the systematic deindustrialization affected by the British in pre-independent India?

Ans: The two-fold motive behind the British systematic deindustrialization is as follows.

(i) Making India a Raw Materials Supplier: The fundamental rationale was to convert India to a simple exporter of significant raw materials in order to feed Britain’s quickly growing industrial base.

(ii) Developing India as a Finished Goods Market: One more significant goal of the British Government was to transform India into a rambling market for those industries’ final products ensuring that they could be guaranteed for the British industries.

Q17. How did the introduction of the railway system change the Indian Economy?

or

Discuss the changes railways brought to India?

Ans: The notion of bringing railways to India was first proposed in the 1830s. They proposed building a railway to connect the three ports of Bombay, Calcutta, and Madras. People were able to travel large distances, which helped India break down geographical and cultural barriers. It helped to commercialise Indian agriculture, which had a negative impact on our villages’ self-sufficiency. The volume of our trade grew, yet our people did not benefit from the earnings.

Q18. What do you mean by economic drain during British India?

or

Who has contested the theory of drain of wealth from India?

or

What do you understand about the drain of Indian wealth during the colonial period?

Ans: In the nineteenth century, Dadabhai Naoroji proposed the ‘Drain of Wealth’ idea. The exploitation of Indian resources was a hallmark of the colonial period. Britain’s principal motivation for conquering India was to gain control of a reliable source of low-cost raw materials to support its own industrial base in the country. Indian money, on the other hand, was spent on expensive finished products imported from Britain, making Britain richer at India’s expense. In addition, the British government employed India’s manpower to expand its colonial base outside of the country. Indians were paid less in the British army than their British equivalents. The money collected from Indiana and the export surplus generated through India’s overseas trade were also used to cover the costs of war and administrative expenses incurred by the British government to manage the colonial administration in India. As a result, British rule plundered Indian resources to serve their own interests.

Q19. How were traditional handicraft industries ruined under British rule in India?

or

The traditional handicrafts industries were ruined under British rule. Do you agree with this view? Give reasons in support of your answer.

or

How British rule ruined the life of artisans and craftsmen in India?

Ans: British economic policies devastated India’s handicrafts and cottage industries, which were formerly the principal sources of trade and income. The British damaged the cotton weaving and spinning industries, as well as the silk and woollen industries, as well as the pottery, paper, metal, and tanner businesses. The British followed the policy of de-industrialization to demolish Indian craftsmanship industries for their own advantage. They changed India to a simple exporter of crude materials for the forthcoming present-day businesses in Britain. The East India Company’s free-trade stance aided them in dictating trade conditions. They also forced Indian artisans to sell their wares at below-market prices, and they hired their services at pay well below the going rate. Indian commodities were subjected to hefty tariffs in the English market, whereas British goods were granted duty-free access to Indian markets. They exploited India in this way, resulting in the demise of world-renowned Indian handicrafts.

Q20. How was the foreign trade in the colonial period?

or

Discuss the state of foreign trade during the British period

or

Write a short note on the colonization effect on foreign trade of India.

Ans: India’s part of the global economy was roughly 20% at the beginning of the nineteenth century, and it was constantly increasing. The British had diminished India’s contribution to roughly 4% by the time they left. As a result, colonial rule crippled foreign trade to a considerable extent. India’s produced goods had a global market prior to colonisation. Some examples include Kashmir and Amritsar shawls and carpets, Banarasi silk sarees, and Nagpur silk textiles. The British intended to divert this vast volume of trade to their own advantage. With the support of restrictive commodities production, trade, and tariff policies during the British era, India’s external trade with the rest of the world was effectively cut off. Half of all international trade was confined to the United Kingdom. With the inauguration of the Suez Canal, British control over Indian international trade became much tighter. As a result of the oversupply, there was no flow of gold or silver. Such atrocities finally led to the emergence of India’s developing foreign trade sector.

Q21. Why is the impact of British rule highly debated among historians?

or

Was British colonialism good or bad for India?

or

What were the benefits of British rule in India?

Ans: The British Empire’s dominance in India is conceivably the most questionable and the most fervently discussed part of the historical backdrop of the British Empire.  Most critics of British rule point out that all of these gains went to a small British ruling class, while the rest of the Indians benefited little. Most Indians were poor and oppressed by their own leaders before the British arrived, and British control was less harsh on ordinary Indians than rule by Indian kings, according to supporters of British rule.

(Image will be uploaded soon)

Following are some of the benefits of the British rule in India: 

1. Education System: People in India are divided because of the various languages spoken in different parts of the country. The British, on the other hand, made English compulsory in the educational system throughout the country in order to recruit clerical personnel among Indians. They were able to lower their administrative costs as a result of this. They also felt that Indians who were taught through their system would eventually adopt their beliefs. This, on the other hand, benefited the Indians in a completely different way. Communication in India was facilitated by the use of a common language. Indians gained a greater understanding of the world, society, and systems. Overall, it has aided in the modernization of the Indian people.

2. Transportation: Prior to the arrival of the British, the only mode of transportation in India was bullock carts and other animals. The British built a vast network of highways and railways to facilitate the movement of raw resources from their source to the ports. The Red Hill Railroad Line in Madras was the first railway line. It was built in 1837 and was used to transport granite stone. In 1853, the first passenger railway line was established between Mumbai and Thane. In the same year, the postal service was also established.

3. Modernisation of the society: The British instilled in India the concepts of liberty, equality, human rights, science, and technology.  This, together with a well-structured educational system, opened the path for the country’s modernisation that was completely oblivious to the world’s modern developments. In 1829, Sati, a ritual in which a widow threw herself in her husband’s funeral pyre, was outlawed. In 1929, the Sharda Act was passed to prevent child marriage.

4. Architecture: The Britishers left behind an enormous number of public structures glad for their architectural wonders such as The Rashtrapati Bhavan, The Parliament House, Gateway of India and many others. They likewise presented current techniques and methods for development to the country. 

Q22. Who were Zamindars? What was the Zamindari system in British India?

or

Write a short note on Zamindari system.

or

How was the Zamindari system of land settlement?

or

What were the various forms of revenue settlement adopted by the British in India? What was the impact of such systems in today’s scenario?

Ans: Lord Cornwallis instituted the Zamindari System in India with the Permanent Settlement Act in 1793. It was first introduced in the Bengal, Bihar, Orissa, and Varanasi provinces of colonial India. The zamindars were recognised as landowners as long as they paid the East India Company’s revenue on time. The zamindars, who were seen as India’s answer to the British nobility, had existed since the post-Mauryan period and grew in prominence throughout the British period. They were found practically in every state, including Kashmir, Himachal Pradesh, Haryana, Punjab, Uttar Pradesh, Rajasthan and Gujarat, as well as Madhya Pradesh, Chhattisgarh, Karnataka, Hyderabad and Kerala. However, over the ages, the land ownership structure had changed. The land was separated into Jagirs and allotted to Jagirdars during the reign of the king. These Jagirdars divided the land they had received and distributed it to subordinate Zamindars. Zamindars forced peasants to cultivate the land in exchange for a portion of their earnings as a levy. The British established their first settlement in Bengal.

The three types of land tenure system adopted by the British are as follows:

a. Permanent Settlement/Zamindari System: Bengal, Bihar, Banaras, and the NWFP divisions accounted for roughly 19% of the total area during British rule.

b. Mahalwari System: During British rule, the Mahalwari System covered 30% of the country, including important areas of the NWFP, central provinces, and Punjab. 

c. Ryotwari System: Assam, Bombay, and Madras Presidencies covered around 51% of the region under British rule.

The following are some of the impacts of the Land Revenue System:

1. These land settlements established a commercial economy and abolished traditional rights. There was an upsurge in money-lending activities as a result of the cash payments of revenue.

2. The land tenure system accentuated socioeconomic divisions. The wealthy had recourse to the courts to defend their assets, whilst the impoverished did not.

3. The British land revenue system in India rattled the stability of Indian communities where agriculture and allied activities provided the majority of income. If a crop failed in any given year, they got miserable.

4. Peasants were forced to produce commercial crops, causing them to pay higher rates for food grains and lower prices for cash crops.

5. As a result, a substantial number of estates were put up for auction to settle revenue arrears. Many blamed it on the tenant farmers’ “stupidity and rascality” in not paying their rents.

Rents were at an all-time high, and it was no surprise. This may be seen in the fact that revenue in 1793 was set at 90% of the rental; by the end of the nineteenth century, rents had climbed to the point that income was just 28% of the rental. This is a measure of the Zamindars’ wealth as well as the unfairness meted out to other portions of India where assessments were significantly higher.

Q23. Enumerate the reasons for the poor growth and productivity of the agricultural sector in the colonial period.

or

How were the conditions of peasants during British rule?

or

What was the impact of British rule on the agriculture of India?

Ans: The plight of Indian peasants deteriorated steadily under British rule. The Englishmen implemented several land revenue schemes after obtaining the diwani of Bihar, Bengal, and Orissa. The agriculture sector dominated the Indian economy both pre-colonial and during the colonial period. The agriculture industry flourished as well after the British invasion. Previously, India used to export completed commodities and import raw materials. India became a net importer of completed goods and a net exporter of raw materials, primarily to Britain, following changes in agricultural laws that urged farmers to plant specific crops. There was a global agricultural catastrophe following World War I. The British Era is also recognised as a period of agricultural commercial transformation. Cash transactions largely superseded the barter system as the medium of exchange. The main motivation for agricultural commercialization was that India had been relegated to a provider of raw materials and food grains to the United Kingdom, as well as an importer of British manufactured goods. Many cash crops were introduced and spread during this time period, including indigo, cotton, jute, tea, and tobacco.

The impact of British rule on Indian agriculture:

  • The British introduced a new class of landowners known as Zamindars, who viewed land as their personal property and sought to maximise monetary gains from it.
  • Agriculture production was no longer just for the benefit of the hamlet, and much of it was sold at the market.
  • The cultivators, who were the actual land tillers, were merely tenants with no rights who might be expelled by landlords.
  • The fanner was frequently severely in debt, putting him in the hands of moneylenders who eventually gained control of the land and its harvest.
  • In England, farmers were forced to grow cash crops in order to feed the industries. It undermined the village’s self-sufficiency.
  • The new revenue arrangements resulted in peasant indebtedness and agricultural commercialization.
  • As a result, there was widespread poverty and an issue of landlessness.

The money-lender cum merchant was aided in exploiting the grower by the expanding commercialization. The peasants were required to sell their produce soon after harvest, at whatever price they could get, in order to satisfy the demands of the government, money-lenders and the landlords. The growth in population pressure on agriculture, which disproportionately affected peasants, was added to the previous issues. The goal of agricultural activities switched from self-sufficiency to commercialization, with the goal of increasing colonial revenues. As a result, cash crop yields increased, but this did not benefit farmers in any manner.

Q24. How was the Indian economy before the advent of British colonial rule in India?

or

What was the condition of India before the Britishers?

or

What were the real conditions of India before the British arrived?

Ans: India was ruled by the British for more than a century. The British acquired the Empire section by section in the light of the conditions prevailing in India prior to the arrival of the British. Weak central political power, competition with European rivals, military forces, and Mughal negligence were the significant reasons that prompted the colonization.  In spite of the fact that the British had no political power in India prior to their entry, it took more than two hundred years for British political power to emerge in India. The conditions that existed before to the entrance of the British caused the colonisation of India.

Let us now consider the following points in relation to pre-colonial India:

1) Political: At the time, caste was the most important factor, and political power was concentrated in the hands of the upper castes. Village political leaders were Thakurs and Patels. 

2) Economic: The majority of the time, they were exchanging products or services with one another. Gold was also significant at the time. Agriculture and related businesses were the mainstays of the economy.

3) Social: The social situation was the worst it had ever been, with ‘untouchability’ and caste discrimination at an all-time high. Women were not allowed to participate in social, political, or economic decisions. Only Brahmin men were permitted to attend school, and even Brahmin women were not permitted to attend.

4) Administration: It was well-managed from an administrative standpoint. There were three administrative levels. The village was the smallest autonomous administrative unit. The judiciary was not good; it was frequently skewed by caste, relative, and gender. 

5) Military: The majority of it was modelled after the Mughal army. Cavalry played a crucial role in the military. It was methodical and effective.

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | Statistics for Economics IMPORTANT QUESTIONS | CHAPTER –1 Introduction| EDUGROWN |

NCERT Most important question:

Q1. Make a list of activities that constitute the ordinary business of life. Are these economic activities?

Answer

The activities that constitute the ordinary business of life are:
→ Buying of goods and services.
→ Rendering services to a company by employees and workers.
→ Selling of goods and services.
Yes, the above mentioned activities are regarded as economic activities as it involve the exchange of money to earn livelihood.

Q2. ‘The Government and policy makers use statistical data to formulate suitable policies of economic development’. Illustrate with two examples.
Answer
The statistical data is important for Government and policy makers to formulate suitable policies of economic development. It not only helps in analysing and evaluate the outcomes of the past policies but also assist them to take corrective measures and to formulate new policies accordingly. It is clear from examples –
(i) It can be ascertained easily by using statistical techniques whether the policy of family planning is effective in checking the problem of rapidly growing population.
(ii)  In preparing annual government budget, previous data of government expenditures and government revenues are taken into consideration for estimating the allocation of funds among various projects.

Q3. “You have unlimited wants and limited resources to satisfy them.” Explain by giving two examples.
Answer

Every individual have unlimited wants but the resources for satisfying the wants are limited. Scarcity is the root of all economic problems. Had there been no scarcity, there would have been no economic problem. This can be understood by examples -(i) A children pocket money is a limited so he/she have to choose only those things that you want the most. You can’t purchase almost all the things you wants.
(ii) A land available should be put in use either in agricultural or industrial. We can’t use same land for both activities.

Q4. How will you choose the wants to be satisfied?

Answer

Any individual fulfills his/her wants according to his/her needs, satisfactions and priority attached to different wants. Moreover, the choice of want also depends on the need of the hour and availability of the goods and also on the availability of means (money) to purchase that want.

Q5. What are your reasons for studying Economics?

Answer

The reasons for studying economics are:

→ To study the Theory of consumption: We want to know how the consumer decides, given his income and many alternative goods to choose from, what to buy when he knows the prices.

→ To study the Theory of Production: We also want to know how the producer, similarly, chooses what to produce for the market when he knows the costs and prices.

→ To study the Theory of Distribution: We want to know how the national income or the total income arising from what has been produced in the country is distributed through wages (and salaries), profits and interest.

→ The study of economics also helps us to understand and analyse the root cause of basic problems faced by an economy like, poverty, unemployment, income disparity, etc. and helps to take various corrective measures.

Q6. Statistical methods are no substitute for common sense. Comment.

Answer
This is true that Statistical methods are no substitute for common sense. Statistical data should not be believed blindly as it can be misinterpreted or misused. The statistical data may involve personal bias or may undergone manipulations. Also, statistical data and methods fail to reveal the errors committed by an investigator while surveying and collecting data. This can be understood by a story.
It is said that a family of four persons (husband, wife and two children) once set out to cross a river. The father knew the average depth of the river. So he calculated the average height of his family members. Since the average height of his family members was greater than the average depth of the river, he thought they could cross safely. Consequently some members of the family (children) drowned while crossing the river. Thus, the common sense must be used while applying statistical methods.

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | GEOGRAPHY | CHAPTER- 4 | DISTRIBUTION OF OCEANS AND CONTINENTS | EDUGROWN |

In This Post we are  providing  CHAPTER 4 DISTRIBUTION OF OCEANS AND CONTINENTS NCERT MOST IMPORTANT QUESTION for Class 11 GEOGRAPHY which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MOST IMPORTANT QUESTION ON DISTRIBUTION OF OCEANS AND CONTINENTS

Question 1.
How do lithosphere plates behave along the transform fault?
Answer:

The lithospheric plates slide over each other, neither creating nor destructing any landmass. Instead, the. friction arising from the movement of the plates usually causes severe earthquakes and earth tremors.

Question 2.
Why do geographers focus their attention on plate boundaries?
Answer:

Geographers focus their attention on plate boundaries because each plate is a tectonic plate. It is rigid and moves as a single unit. Nearly all major tectonic activity occurs along the plate boundaries.

Question 3.
What does the term ‘supercontinent’ refer to?
Answer:

The term ’supercontinent’ refers to a single common geological landmass called Pangaea. It has been proposed that all landmasses of the world had formed from this ‘supercontinent’. Pangaea had evolved some 280 million years ago, at the end of the Carboniferous period and by mid-Jurassic age, 150 million years ago. Pangaea land split into Laurasia, the northern continent, and Gondwanaland, the southern continent. About 65 million years ago, i.e. at the end of the cretaceous, bound mainland were further broken up to give rise to several other continents such as South America, Africa, Australia, and Antarctica.

Question 4.
Discuss the causes of plate movement.
Answer
:
Sub-crustal convection currents invoke the mechanism of thermal convection that acts as a driving force for the movement of plates. Hot currents rise, then cool as they reach the surface. At the same time, cool currents sink down. This convectional movement moves the crustal plates. .. Owing to current movements, the rigid plates of the lithosphere, which ‘float’ on more mobile asthenosphere, are in constant motion.

Question 5.
What is a geological time-scale?
Answer:

The chronology of the geological history’ of the earth is revealed by its rocks. Geological time scale indicates the hierarchy of time periods during which different rocks of the earth have formed.

Question 6.
What do you mean by ‘jig-saw-fit’? Describe the similarities found on the east and west coasts of the Atlantic ocean. What do they suggest?
Answer:

The ‘jig-saw-fit’ means the landmasses on the east and west coast of the Atlantic ocean can be fitted together. There are many similarities found on the two coasts :

  1. The Gulf of Guinea can be fitted into Cape San-Rogue of Brazil, the shoulder of Africa can be fitted into Gulf of Mexico, Western Europe and Eastern coast of North America along with Greenland can be fitted together.
  2. Gold deposits of Ghana lands are found on the east and in Brazil on the west.
  3. The glacial deposits are found in all landmasses of Gondwana land.

These similarities suggest that these continents were together in the geological past.

Question 7.
Discuss the Continental Drift Theory.
Answer:

Continental Drift Theory was proposed by Alfred Wegner in 1912. He postulated that all landmasses of the world have been formed from one super-continent called Pangaea.

The supercontinent, Pangaea, had evolved some 280 million years ago, at the end of the Carboniferous period and by the mid-Jurrasic age, 150 million years ago. Pangaea had split into a northern continent, Laurasia, and a southern continent Gondwanaland. About 65 million years ago, i.e., at the end of the Cretaceous, Gondwanaland further broke up to give rise to several other continents, such as South America, Africa, Australia, and Antarctica. Thus, the present distribution of the continental masses and the oceans are the n .uit of fragmentation of one or more pre-existing masses. These landmasses have drifted apart the intervening hollows having been occupied by the oceans.
Class 11 Geography Important Questions Chapter 4 Distribution of Oceans and Continents im-1
There are several pieces of evidence that suggest the existence of Pangaea. This evidence is available in the form of geological watching, palaeoclimatic units, and paleomagnetism.

Question 8.
Describe sea-floor spreading in brief.
Answer:

The present distribution of continents has taken place in the last 65 million years. The drift of continents still continues. The ridges down the middle of ocean floors have been emitting lava continuously. Those mid-oceanic ridges are cracks on the floor of the ocean where molten rocks push up to form a new crust. The crust spreads among the ridge and the ocean basin widens. This phenomenon is known as sea-floor spreading. The Atlantic ocean is getting smaller and the Red Sea is the part of a crack in the crust that will widen to produce new ocean millions of years ahead in the future. In the past, the widening of the South Atlantic ocean has separated Africa and South America.
Class 11 Geography Important Questions Chapter 4 Distribution of Oceans and Continents im-2

Question 9.
Explain the plate tectonic theory and its mechanism.
Answer:

Plate tectonic theory proves that the earth’s crust consists of several plates that carry continents and the ocean floors and float on the asthenosphere, moving very slowly, the movement probably resulting from currents in the asthenosphere. As shown in fig., the lithosphere is broken into seven major plates. They include :

  1. Pacific plate
  2. Eurasian plate
  3. Indo-Australian plate
  4. African plate
  5. North American plate
  6. South American plate
  7. Antarctic plate

The latest among these is the Pacific plate which is composed of oceanic crust almost entirely. The other plates have both continental and ocean crust. No plate consists of only continental crust. Plates range in thickness from about 70 km. beneath oceans to 150 km. under continents. Each tectonic plate is rigid and moves on a single unit. Nearly all major tectonic activities occur along the plate boundaries.

Based on the relative motion of plates, three kinds of plate boundaries have been recognized. They are :
1. Zones of divergence: These are boundaries along which plates separate and in the process of separation molten materials upwell. This is commonly observed along linear ocean edge where the new lithosphere is created in the form of new ocean floors. Active volcanism and shallow focus earthquakes make such boundaries,

2. Zones of convergence: There are the boundaries along which, the edge of one plate overrides the other. The overridden plate slips down into the mantle and is absorbed. This process is known as subduction.

3. Fracture zones or Transform faults: The plates slide past each other effect creating or destructing the boundaries. However, shallow focus earthquakes may result due to this friction.
Class 11 Geography Important Questions Chapter 4 Distribution of Oceans and Continents im-3

Question 10.
Describe the main features of the Indian plate.
Answer:

Indian ocean floor presents striking topography consisting of a number of elevated ridges and plateaus. Two of the ocean ridges, namely, the Mascarene Plateau, Chagos-Maldweep-Lakshadweep island ridge are said to be the volcanic tracts of two hot spots. The Northward extension of Ninety-east Ridge indeed in the trench which consumed the seafloor to the north of the Indian continental mass. The Chagos- Lakshadweep ridge linked the ancient Carlsberg ridge with the Southeast Indian ridge during the Eocene period (50 million years ago).

Consequent to the Carlsberg-Southeast Indian ocean ridge, the collision between the Indian plate and the Eurasian plate took place north of the Indian plate giving rise to the Himalayas. The suture between Indian and Eurasian plates in the Himalayan region has been along the Indus and Brahmaputra rivers.

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | GEOGRAPHY | CHAPTER- 7 | LANDFORMS AND THEIR EVOLUTION | EDUGROWN |

In This Post we are  providing  CHAPTER 7 LANDFORMS AND THEIR EVOLUTION NCERT MOST IMPORTANT QUESTION for Class 11 GEOGRAPHY which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MOST IMPORTANT QUESTION ON LANDFORMS AND THEIR EVOLUTION

Question 1.
How does wind forms geomorphic landforms or how does wind performs its tasks in the desert areas.
Answer:

  • Wind move along the desert floors with great speed and the obstructions in their path create turbulence. Wind causes deflations, abrasion and impact.
  • Deflation includes lifting and removal of dust and smaller particles from the surface of rocks. In the transportation process sand and silt act as effective tools to abrade the land surface. The impact is simply sheer force of momentum which occurs when sand is blown into or against a rock surface.

Question 2.
Explain the depositional landforms formed by glaciers.
Answer:

The depositional landforms formed by glaciers are:

  • Moraines: When valley glaciers retreating rapidly leave an irregular sheet of till over their valley floor. Such deposits varying greatly in thickness and in surface topography are called Moraines
  • Esker: When glaciers melt, the water flows on the surface of the ice or seeps down along the margins or even moves through the holes in the ice. Very minor coarse materials settle in valley of ice beneath the glacier and when ice melts it can be found as sinuous ridge called Esker.
  • Drumlins: Drumlins are smooth oral shaped ridge-like features composed mainly of glacial till with some masses of gravel and sand.

Question 3.
What are Moraines? Explain different types of Moraines with diagram.
Answer:

Moraines are long ridges of deposits of glacial till.
Different types of moraines are:

  •  The lateral moraines: They form along the sides parallel to glacial valleys. These moraines partly or fully owe their origin to glacio- fluvial waters pushing up materials to the sides of glaciers.
  • Ground moraines: Many valley glaciers retreating rapidly leave an irregular sheet of till over their valley floors. Such deposits varying greatly in thickness and in surface topography are called Ground moraines.
  • Medial moraines: The moraines in the centre of the glacial valley flanked by lateral moraines is called medial moraines.
Class 11 Geography NCERT Solutions Chapter 7 Landforms and their Evolution SAQ Q13

Question 4.
Differentiate between:
1. Stalactites and Stalagmites
2. Sinkholes and Urallas
3. Gorge and Canyon
Answer:

1. Stalactites and Stalagmites

S.No.StalactitesStalagmites
1.Stalactites hang as icicles of different diameters.Stalagmites rise up from the floor of the caves.
2.They are broad at their bases and taper towards the free ends showing up in a variety of forms.It may take the shape of a disc, a column with either a smooth, rounded bulging end.

2. Sinkholes and Urallas

SinkholesUrallas
A sinkholes is an opening more or less circular at the top and funnel-shaped towards the bottom.When sink holes and dolines join together because of slumping of material along their margins the Urallas are formed.

3. Gorge and Canyon

  • A gorge is a deep valley with very steep to straight sides and a canyon is characterized by steep step-like side slopes and may be as deep as a gorge.
  • A gorge is almost equal in width at its top as well as its bottom. In contrast, a canyon is wider at its top than at its bottom. In fact, canyon is a variant of gorge.
  • Example, canyons commonly form in horizontal bedded sedimentary rocks and gorge form in hard rocks.

Question 5.
Explain the landforms that are seen in upper part of the river.
Answer:

In upper part of the river, many beautiful and attractive landforms are formed. Some of them are as follows:

  •  V-shaped valleys: Valleys start as small and narrow rills; the rills will gradually develop into long and wide gullies; the gullies will further deepen, widen and lengthen to give rise to valleys. Depending upon dimensions and shape, many types of valleys like V-shaped valley, gorge, canyon, etc. can be recognised.
  • Gorge: A gorge is a deep valley with very steep to straight sides.
  • Canyon: A canyon is characterised by steep step-like side slopes and may be as deep as a gorge. A gorge is almost equal in width at its top as well as its bottom. In contrast, a canyon is wider at its top than at its bottom. In fact, a canyon is a variant of gorge.
  • Waterfall: When the rivers start falling in pits in mountainous regions, it makes waterfall.
  • Plunge pools: Once a small and shallow depression forms, pebbles and boulders get collected in those depressions and get rotated by flowing water and consequently the depressions grow in dimensions. A series of such depressions eventually join and the stream valley gets deepened. At the foot of waterfalls also, large potholes, quite deep and wide, form because of the sheer impact of water and rotation of boulders. Such large and deep holes at the base of waterfalls are called plunge pools.

Question 6.
Explain the landforms made by erosion caused by groundwater.
Answer:

Important landforms made by erosion are as follows:

1. Pools: These are conical shaped pits whose depth is three to nine metres. The width of the mouth is more than one metre. Due to solubility in water, when cracks in limestone increase, then pools take birth.

2.Swallow holes: Small to medium sized round to sub-rounded shallow depressions called swallow holes form on the surface of limestones through soil.

3. Sinkholes: A sinkhole is an opening more or less circular at the top and funnel -shaped towards the bottom with sizes varying in area from a few square metre to a hectare and with depth from a less than half a metre to thirty metres or more.

4. Uvalas: When sinkholes and dolines join together because of slumping of materials along their margins or due to roof collapse of caves, long, narrow to wide trenches called uvalas are formed.

5. Collapse sinks: If the bottom of the sinkholes forms the roof of a void or cave underground it might collapse leaving a large hole opening into a cave or a collapse sinks.

6. Lapies: Gradually, most of the surface of the limestone is eaten away by these pits and trenches, leaving it extremely irregular with a maze of points, grooves and ridges or lapies. Especially, these
ridges or lapies form due to differential solution activity along parallel to sub¬parallel joints. The lapie field may eventually turn into somewhat smooth limestone pavements.

7. Caves: In areas where there are alternating beds of rocks (shales, sandstones, quartzites) with limestones or dolomites in between or in areas where limestones are dense, massive and occurring as thick beds, cave formation is prominent. Water percolates down either through the materials or through cracks and joints and moves horizontally along bedding planes. It is along these bedding planes that the limestone dissolves and long and narrow to wide gaps called caves result. There can be a maze of caves at different elevations depending upon the limestone beds and intervening rocks. Caves normally have an opening through which cave streams are discharged. Caves having openings at both the ends are called tunnels.

Question 7.
Explain the depositional landforms made by rivers.
Answer:

Depositional Landfoi, made by rivers:

1. Alluvial Fans: Alluvia ms are formed when streams flowing from higher levels break into foot slope plains of low gradient. Normally very coarse load is carried by streams flowing over mountain slopes. This load becomes too heavy for the streams to be carried over gentler gradients and gets dumped and spread as a broad low to high cone shaped deposit called alluvial fan. Usually, the streams which flow over fans are not confined to their original channels for long and shift their position across the fan forming many channels called distributaries. Alluvial fans in humid areas show normally low cones with gentle slope from head to toe.

2. Deltas: Delta is like alluvial fans but develop at a different location. The load carried by the rivers is dumped and spread into the sea. If this load is not carried away far into the sea or distributed along the coast, it spreads and accumulates. Such areas over flood plains built up by abandoned or cut-off channels contain coarse deposits. The flood deposits of spilled waters carry relatively finer materials like silt and clay. The flood plains in a delta are called delta plains.

3. Floodplains: Floodplain is a major landform of river deposition. Large sized materials are deposited first when stream channel breaks into a gentle slope. Thus, normally, fine sized materials like sand, silt and clay are carried by relatively slow moving waters in gentler channels usually found in the plains and deposited over the bed and when the waters spill over the banks during flooding above the bed.

4. Natural Levees: Natural levees are found along the banks of large rivers. They are low, linear and parallel ridges of coarse deposits along the banks of rivers, quite often cut into individual mounds. During flooding as the water spills over the bank, the velocity of the water comes down and large sized and high specific gravity materials get dumped in the immediate vicinity of the bank as ridges. They are high nearer the banks and slope gently away from the river. The levee deposits are coarser than the deposits spread by flood waters away from the river. When rivers shift laterally, a series of natural levees can form.

5. Point Bars: Point bars are also known as meander bars. They are found on the convex side of meanders of large rivers and are sediments deposited in a linear fashion by flowing waters along the bank. They are almost uniform in profile and in width and contain mixed sizes of sediments. If there more than one ridge, narrow and elongated depressions are found in between the point bars.

Question 8.
Explain the erosional landforms created by waves and currents.
Answer:

Cliffs, Terraces, Caves and Stacks are important landforms created by erosion caused by waves and currents.

  • Wave-cut cliffs: Almost all sea cliffs are steep and may range from a few m to 30 m or even more. At the foot of such cliffs there may be a flat or gently sloping platform covered by rock debris derived from the sea cliff behind. Such platforms occurring at elevations above the average height of waves is called a wave-cut terrace.
  • Terraces: The lashing of waves against the base of the cliff and the rock debris that gets smashed against the cliff along with lashing waves create hollows and these hollows get widened and deepened to form sea caves. The roofs of caves collapse and the sea cliffs recede further inland.
  • Sea stacks: Retreat of the cliff may leave some remnants of rock standing isolated as small islands just off the shore. Such resistant masses of rock, originally parts of a cliff or hill are called sea stacks.

Like all other features, sea stacks are also temporary and eventually coastal hills and cliffs will disappear because of wave erosion giving rise to narrow coastal plains, and with onrush of deposits from over the land behind m ay get covered up by alluvium or may get covered up by shingle or sand to form a wide beach.

Question 9.
Explain the different stages of a river.
Answer:

A river passes through three stages like a human being: youth, mature and old.

1. Youth Stage: Youth streams are less in number. In this stage with poor integration and flow over original slopes showing shallow V-shaped valleys with no floodplains or with very narrow floodplains along trunk streams. Streams divides are broad and flat with marshes, swrnmp and lakes. If meanders are present, they develop over these broad upland surfaces. These meanders may eventually entrench themselves into the uplands. Waterfalls and rapids may exist where local hard rock bodies are exposed.

2. Mature Stage: During this stage streams are plenty with good integration. The valleys are still V-shaped but deep; trunk streams are broad enough to have wider floodplains within which streams may flow in meanders confined within the valley. The flat and broad inter stream areas and swamps and marshes of youth disappear and the stream divides turn sharp. Waterfalls and rapids disappear.

3. Old Stage: Smaller tributaries during old age are few with gentle gradients. Streams meander freely over vast floodplains showing natural levees, oxbow lakes, etc. Divides are broad and flat with lakes, swamps and marshes. Most of the landscape is at or slightly above sea level.

Question 10.
Distinguish between river alluvial plains and glacial outwash plains.
Answer:

River Alluvial Plains: The alluvial plain is an erosional plain that occurs from weathering caused by water currents in the sea, river or stream. Fluvial (water) movement comes from higher land regions and wear away landmasses to produce low relief plains. This is known as the alluvial plain. These landforms are made up of the deposition of sediment over a long period of time from the fluvial movement to form alluvial soil.

An alluvial plain is characterized by its relatively flat -and gently sloping landform and is normally formed at the base of a range of hills. Continuous fluvial weathering of these hills is what causes sediments to move and spread across lower levels to produce this type of plain. These plains are formed mostly by slow running rivers, as slower fluvial movement picks up less sediment off the river floor causing more particles to settle and develop into an alluvial plain. Areas where more particles are dropped off are sometimes referred to as flood plains, and the particles that settle are called alluvium.

Glacial Outwash Deposits: The large quantities of water that flowed from the melting ice deposited is called glacial outwash. Outwash plains made up of outwash deposits are characteristically flat and consist of layers of sand and other fine sediments. Such plains with their sandy soils are often used for specialized kinds of agriculture, such as the potato production in Montcalm County.

As the margins of the ice lobes retreated, glacial meltwater and precipitation drained southward to the Gulf of Mexico because higher land or glacial ice blocked flow in other directions. Ice-marginal lakes (or proglacial lakes) form when the land in front of the ice margin slopes toward the ice, allowing meltwater to pond directly in contact with the ice.

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | GEOGRAPHY | CHAPTER- 6 | GEOMORPHIC PROCESSES | EDUGROWN |

In This Post we are  providing  CHAPTER 6 GEOMORPHIC PROCESSES NCERT MOST IMPORTANT QUESTION for Class 11 GEOGRAPHY which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MOST IMPORTANT QUESTION ON GEOMORPHIC PROCESSES

Question 1.
What factors have caused diastrophism?
Answer:

All processes that move, elevate or build up portions of the earth’s crust come under diastrophism. They include:

  • Orogenic processes: It involves mountain building through severe folding and affecting long and narrow belts of the earth’s crust;
  • Epeirogenic processes: It involves uplift or warping of large parts of the earth’s crust;
  • Earthquakes: It involves local relatively minor movements;
  • Plate tectonics: It involves horizontal movements of crustal plates. All these processes-cause pressure, volume and temperature (PVT) changes which in turn induce metamorphism of rocks.

Question 2.
Why is the surface of the earth uneven?
Answer:

The difference in the internal forces operation from within the earth which built up the crust have been responsible for the variations in the outer surface of the crust. Due to variations in geothermal gradients and strength, the actions of endogenic forces are not uniform and hence the tectonically controlled original crystal surface is uneven.

Question 3.
What factors activate the process of mass movement?
Answer:

Following factors activate the process of mass movement.

  • Removal of support from below to materials above through natural or artificial means;
  • Increase in gradient and height of slopes;
  • Overloading through addition of materials naturally or by artificial filling;
  • Overloading due to heavy rainfall, saturation and lubrication of slope materials;
  • Removal of material or load from over the original slope surfaces;
  • Occurrence of earthquakes, explosions or machinery;
  • Excessive natural seepage;
  • Heavy drawdown of water from lakes, reservoirs and rivers leading to slow outflow of water from under the slopes or river banks;
  • Indiscriminate removal of natural vegetation.

Question 4.
How does biological weathering take place?
Answer:

Biological weathering takes place by:

  • Animals: Animals like rabbits, rats, termides, etc. make burrows and holes in the rocks. They consumes large quantity of soils and rocks for making their habitat and destruction of food. This loosens the rock strata and disintegration occurs.
  • Vegetation: Long and teanatious roots of plants work down into cracks of rocks. The roots of shrubs and trees reach deep into them and this lodge large blocks.
  • Human Activities: Mining, deforestation, indiscriminate cultivation of land and construction activities contribute to weather.

Question 5.
Write the difference between:
(i) Exogenic and endogenic forces
(ii) Orogenic movements and epeirogenic movements
(iii) Physical weathering and chemical weathering.
Answer:

(i)

S.no.Exogenic ForcesEndogenic Forces
1.The external forces are known as Exogenic forces.The internal forces are known as Endogenic forces.
2.Solar energy is the sole driving force behind all the Exogenic processes. E.g. Erosion, Flood, Mining, etc.Gravity is the sole driving force behind all the Endogenic process. E.g. Earthquake, Volcanic Eruption, etc.

(ii)

S.no.Orogenie MovementsEpeirogenic Movements
1.In the process of Orogenie the crust is severely deformed into folds.Due to Epeirogenic they may be single deformation.
2.It is mountain building process.It is continental building process.
3.It affects long and narrow belt of earth’s crust.It involves uplift or wrapping of large parts of earth’s crust.

(iii)

S.no.Physical WeatheringChemical Weathering
1.Physical force disintegrates the rocks.Rocks are decomposed by chemical changes.
2.No chemical change occurs.Not much physical change occurs but chemical change occurs due to air and water.
3.More effective in dry and cold areas.Effective in hot and hum 1 areas.
4.Insulation, frost and pressure are the agents.Oxidation and reduction arbonation, hydration and soil are the agents.
5.Rocks are affected at the greater depth.Rocks are affected on the surface only.
6.Even the strong minerals are affected by physical weathering.Chemical resistance minerals are not affected.

Question 6.
What are different types of mass movements?
Answer:

There are three types of mass movements: Slow Movements: Creep is one type under this category which can occur on moderately steep, soil covered slopes. Movement of materials is extremely slow and imperceptible except through extended observation. Materials involved can be soil or rock debris. Soil creep, talus creep, rock creep, rock- glacier creep etc can be identified. It also includes solifluction which involves slow downslope flowing soil mass or fine grained rock debris saturated or lubricated with water. This process is quite common in moist temperate areas where surface melting of deeply frozen ground and long continued rain respectively, occur frequently. When the upper portions get saturated and when the lower parts are impervious to water percolation, flowing occurs in the upper parts.

Rapid Movements: These movements are mostly prevalent in humid climate regions and occur over gentle to steep slopes. Movements of water- saturated clayey or silty earth materials down low angle terraces or hill slides is known as earth flow. When slopes are steeper ever the bedrock especially of soft sedimentary rocks like shale or deeply weathering igneous rock may slide downslope. With heavy rainfall, thick layers of weathered
materials get saturated with water and either slowly or rapidly flow down along definite channels. It looks like a stream of mud within a valley.

Landslides: The types of landslides.

  • Slumps: The slipping of one or several units of rock debris with a backward rotation with respect to the slope over which the movement takes place.
  • Debris slide: rapid rolling or sliding of earth debris without backward rotation of mass is known as Debris slide.
  • Rockslide: Sliding of individual rock masses down bedding, joint or fault surface is rockslide.
  • Rock fall: Rock fall is free falling of rock blocks over any steep slope keeping itself away from the slope. Rock falls occurs from the superficial layers of the rock face.

Question 7.
Explain different types of chemical weathering.
Answer:

Different types of chemical weathering includes:

1. Oxidation and Reduction: Oxidation is the effect of oxygen in air and water on the rocks. The atmospheric oxygen in rainwater unites with minerals in rocks specially with iron compounds. When oxidised minerals are placed in an environment where oxygen is absent, reduction takes place. It exists normally below water table, in area of stagnant water in more hot and humid climates.

2. Carbonation: When the carbon dioxide in atmosphere dissolves in water it form carbonic acid that affects the rocks, it is carbonation. It has acidic affect and dissolves calcium carbonates and magnesium carbonates such as gypsum, marble, limestone.

3.  Hydration: When the hydrogen of water dissolves in rocks hydration occurs. Certain minerals in rocks increase their volume and become heavy when observe water contains hydrogen. They break due to its increased pressure and the colour also changes.

4. Solution: Rainwater is able to dissolve certain minerals and leaching of the soil occurs. Normally solids are also removed during leaching. For e.g.: gypsum, rock salt, etc. undergo solution.

Question 8.
Explain different types of physical weathering.
Answer:

Different types of physical weathering includes:

  • Exfoliation: Due to differential heating and resulting expansion and contraction of surface layers and their subsequent exfoliation from the surface results in smooth rounded surfaces in rocks. In rocks like granites, smooth surfaced and rounded small to big boulders called tors form due to such exfoliation.
  • Frost: It is an active agent in cold climatic regions in high altitudes and the cracks are filled with water during the day time, this water is frozen at night when temperature falls below freezing point.
  • Pressure: Many igneous and metamorphic rocks crystallize deep in the interior under the combine influence of high pressure and temperature. The salt near surface pores cause splitting of the grains within the rocks which eventually falls off, this result into granules disintegration.

Question 9.
Explain about erosion and deposition.
Answer:

Erosion involves acquisition and transportation of rock debris. When massive rocks break into smaller fragments through weathering and any other process, erosional geomorphic agents like running water, groundwater, glaciers, wind and waves remove and transport it to other places depending upon the dynamics of each of these agents. Abrasion by rock debris carried by these geomorphic agents also aids greatly in erosion. By erosion, relief degrades, i.e., the landscape is worn down. Weathering aids erosion it is not a pre-condition for erosion to take place. Weathering, mass-wasting and erosion are degradational processes. It erosion that is largely responsible for continuous changes that the earth’s surface is undergoing. The erosion and transportation of earth materials is brought about by wind, running water, glaciers, waves and ground water.

Deposition is a consequence of erosion. The erosional agents loose their velocity and hence energy on gentler slopes and the materials carried by them start to settle themselves. In other words, deposition is not actually the work of any agent. The coarser materials get deposited first and finer ones later. By deposition depressions get filled up. The same erosional agents viz., running water, glaciers, wind, waves and groundwater act as aggradational or depositional agents also. What happens to the surface of the earth due to erosion and deposition is elaborated in the next chapter on landforms and their evolution. There is a shift of materials in mass movements as well as in erosion from one place to the other.

Question 10.
Is it essential to distinguish between geomorphic agents and geomorphic processes? If yes, explain the difference.
Answer:

Yes, it is essential to distinguish between geomorphic agents and geomorphic processes because former is the cause and latter is the stepwise process.

  • Geomorphic agent: An agent is a mobile medium (like running water, moving ice masses, wind, waves and currents, etc.) which removes, transports and deposits earth materials. Running water, groundwater, glaciers, wind, waves and currents, etc., can be called geomorphic agents.
  • Geomorphic Processes: The Endogenic and Exogenic forces causing physical stresses and chemical actions on earth material and bringing about changes in the configuration of the surface of the earth is known as Geomorphic Process.

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | GEOGRAPHY | CHAPTER- 5 | MINERALS AND ROCKS | EDUGROWN |

In This Post we are  providing  CHAPTER 5 MINERALS AND ROCKS NCERT MOST IMPORTANT QUESTION for Class 11 GEOGRAPHY which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MOST IMPORTANT QUESTION ON MINERALS AND ROCKS

Question 1.
What is lithification?
Answer:

The fragments of the rocks are transported by various exogenous agencies and deposited. These deposits through compaction and/or cementation turn into rocks. This process is called lithification. In many sedimentary rocks, the layers of deposits. retain their characteristics even after lithification.

Question 2.
How would you classify the igneous rocks based on the size and nature of crystals?
Answer:

There are five types of igneous rocks based on the size and nature of crystals viz.

  1. rocks with phaneritic textured crystals
  2. rocks with orphan textured crystals
  3. equigranular textured rocks, and
  4. porphyritic textured rocks.

The crystals large enough to be seen with naked eyes or with the help of hand lens are called phaneritic textured crystals, whereas those too small to be distinguished without the aid of a microscope are – called orphan textured crystals of the igneous rocks. Where crystals in the rocks are all within the same size range, the texture is described as equigranular, whereas few large crystals are embedded in a matrix of smaller crystals, the texture is porphyritic.

Question 3.
Discuss the classification of sedimentary rocks into clastic and non-clastic division.
Answer:

Clastic means ‘broken’, describes clastic sediments consisting of particles removed individually from a parent rock source. The naming of clastic rocks depends on the size of component mineral grains.

The non-clastic sedimentary rocks are made of sediments of two basic types: chemical precipitates and organically derived sediments.

The chemical precipitates are solid mineral matters precipitated from an aqueous solution. The rock salt and gypsum are its examples. The organically derived sediments consist of remains of plants and animals as well as mineral matters produced by activities of plants and animals. Coal and limestone are examples.

Question 4.
What are schists?
Answer:

As metamorphism continues a large percentage of the minerals assume the plate-like shape and are assembled in parallel orientation in the rock, a structure is known as foliation. Strongly developed foliation is known as schist.

Question 5.
What is meant by mineral hardness?
Answer:

The degree to which a mineral surface resists being scratched is known as its mineral hardness. Hardness is important because it determines how a mineral is worn away by the abrasive action of stream, waves, wind and glaciers in the processes of erosion and transportation..

Question 6.
Write short notes on:
1. Sedimentary rocks
2. Types of metamorphism
Answer:

1. Sedimentary rocks: Exogenous agencies such as rain, wind, ice, running water, plants and animals are constantly hurried in rock disintegration producing loose and broken rock fragments in all sizes. These minerals are carried by wind, ice and running water in depressions such as lakes and seas on the earth’s surface. Such dropped materials are called sediments. Accumulation of these sediments in course of time gives rise to sedimentary rocks. The word ‘sedimentary’ is derived from the Latin word ‘sedimented’ means setting down. The sediments are usually deposited in distinct layers or strata. Therefore, these rocks are also known as stratified rocks.

2. Types of metamorphism: Metamorphism is the process of transformation of pre-existing rock into a new rock. Thus, metamorphic rocks are found when a rock is subjected to heat and/or pressure. Their characteristics are altered by forming new mineral forms. There are three types of metamorphism, viz. foliation, lineation and banding. When, under continued metamorphism, its minerals assume the plate-like shape and are assembled in parallel orientation in the rock, it is called foliation, e.g., Schist is formed in this manner.

When the mineral grains are drawn out into long, thin, pencil-like objects, all in parallel alignment, it is referred to as lineation. In another type of metamorphism, i.e., banding, the minerals of different varieties or groups are segregated into alternate layers. These layers are usually of light or dark shades, making the banding conspicuous.

Question 7.
What is the economic importance of minerals?
Answer:

Mineral resources can be divided into four main groups – essential resources, energy resources, metal resources and industrial resources. The most basic group, essential resources, comprises soil and water. Energy resources can be divided into fossil fuels (crude oil, natural gas, coal, oil shale and tar sand) and nuclear fuels (uranium, thorium and geothermal power). Metal resources range from structural metals such as iron, aluminium and titanium to ornamental and industrial metals such as gold, platinum and gallium.

Mineral deposits have two geological characteristics that make them a real challenge to modem civilization. First, all of them are non-renewable resources. The geological processes that form them are much slower than the rate at which we exploit them. There is no likelihood of our ability to grow mineral deposits at a rate equal to our consumption. Second, mineral deposits have a place value. We cannot decide from where to extract them; nature made that decision for us when the deposits were formed.

Question 8.
Describe the categorization of metamorphic rocks.
Answer:

The metamorphic rocks can be broadly grouped into two major classes – cataclastic rocks and recrystallised rocks. Cataclastic rocks are formed by mechanical disruption (breaking and crushing) of the original materials. The process is described as dynamic metamorphism.

The recrystallised rocks are further divided into two sub-classes – contact and regional metamorphic rocks. The contact metamorphic rocks are formed by recrystallisation under high temperature caused by intruding magma. The rocks are not subjected to bending or breaking and new minerals emanating from magma are added to metamorphosed rocks. The regional metamorphic rocks undergo recrystallisation during the process of being deformed by sharing often under the condition of high pressure or high temperature or bolts.

Question 9.
Discuss various types of rocks in detail.
Answer:

There are three main groups of rocks: igneous, sedimentary and metamorphic rocks.
Igneous rocks: These are formed from lava hurled out of a volcano or from the cooling of hot magma below the crust. Granite is a coarse-grained rock that was formed by the slow cooling of magma. Basalt is a fine-grained igneous rock, almost black, that was formed by quick cooling of lava. Chemical differentiation of magma gives rise to mafic and felsic types of igneous rocks.

The size of mineral crystals in an igneous rock largely depends upon the rate of cooling of magma. As a general rule, rapid cooling results in small crystals and slow cooling in large crystals. Extremely sudden cooling results in the formation of a natural glass which is non-crystalline. Large bodies of magma trapped beneath the surface cool very slowly because the surrounding rocks conduct the heat slowly. Rapid cooling occurs in lava that loses heat rapidly to the atmosphere or to the overlying ocean water.

Question 10.
Describe the formation of igneous rocks, giving suitable examples of various types.
Answer:

The igneous rocks are divided into extrusive rocks and intrusive rocks. When the magma solidifies on the surface of the earth, we call it an extrusive rock. A typical example of this kind of rock is basalt. It is a very fine-grained rock, usually Sf black in colour.

On the other hand, when the magma solidifies in the crust, below the surface, it is called an intrusive rock. The few most common examples of intrusive rocks are granite and dolerite. More frequent, however, is the solidification of magma below the earth’s surface leading to the formation of intrusive rocks. Igneous rocks are classified on the basis of chemical composition and texture. Chemical differentiation of magma gives rise to mafic and felsic types of igneous rocks.

Texture relates to the sizes and pattern of the mineral crystals present in the rock. The size of mineral crystals in an igneous rock depends largely upon the rate of cooling of magma. As a general rule, rapid cooling results in small crystals and slow cooling results in large crystals. Extremely sudden cooling results in the formation of natural glass which is non-crystalline. Large bodies of magma trapped beneath the surface cool very slowly because the surrounding rocks conduct the heat slowly. Rapid cooling occurs in lava that loses heat rapidly to the atmosphere or to the overlying ocean water.

Read More

NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | GEOGRAPHY | CHAPTER- 3 | INTERIOR OF EARTH | EDUGROWN |

In This Post we are  providing  CHAPTER 3 INTERIOR OF EARTH NCERT MOST IMPORTANT QUESTION for Class 11 GEOGRAPHY which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MOST IMPORTANT QUESTION ON INTERIOR OF EARTH

Question 1.
How do the rocks of the earth’s mantle behave when subjected to the earthquake waves?
Answer:

The earth’s mantle behaves as an elastic solid when subjected to the earthquake waves. It changes the shape of the landscape when stresses are applied, but returns exactly to its original shape when these stresses are removed.

Question 2.
What is asthenosphere?
Answer:

The asthenosphere is the zone of hot rocks, believed to be in a plastic condition, underlying the solid lithosphere or the earth’s crust. It is sometimes termed as the soft layer of mantle or the low-velocity zone because the earthquake waves travel in it at reduced velocities.

Question 3.
Distinguish between Body waves and surface waves.
Answer:

The earthquake waves which travel longitudinally through the solid body of the earth are called Body waves. They move-faster. Those waves which move transversally along the surface are known as Surface waves. They move slowly and cause more disaster.

Question 4.
Define surface waves along with their sub-types.
Answer:

The earthquake waves which move along the free upper crust of the earth are called surface waves. Surface waves are of two types, viz, Rayleigh waves and Love waves. Rayleigh waves can be visualised as water waves travelling across the surface of a still pond after a pebble has been tossed into the water. But the motion in the Love waves is entirely horizontal, at right, angles to the direction of the wave motion. The Rayleigh and Love waves travel more or less the same length, but with different speeds.
Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-1

Question 5.
Describe the three types of earthquake waves.
Answer:

These waves are :

  1. ‘P’waves or longitudinal waves-These are also known as primary waves. These travel in the direction of their movement. They can travel through solids as well as liquid and gaseous matter.
  2. ‘S’ waves or transverse waves – These are also known
    as secondary waves. These travel at a right angle to the direction of their oscillation. They can travel in solid ‘? medium only.
  3. ‘L’ waves – These are known as surface waves. These waves do hot go deep into the earth.

Question 6.
Write short notes on :
1. Shadow zone
2. The earth’s crust
Answer:

1. Shadow zone – It lies beneath the surface of the earth, i.e., in its interior. The seismic waves bend as they travel through the core and, therefore, ‘P’ waves are not directly received in a zone known as the shadow zone. Also, ‘S’ waves are not received there because they do not travel through the liquid outer core. Only surface waves are received in the shadow zone.

2. The earth’s crust – This is also known as the lithosphere. The crust is the outermost shell 1 of the earth. It consists of the surface granite SIAL and the intermediate basic SIMA layers. It is separated from the under layer MANTLE by the Mohorovicic Discontinuity. There are two kinds of crust – continental and oceanic. Continental crust has an average density of 3 g/cnt3, the average thickness of 35 to 40 km. (22 to 25 miles) with large areas older than 1500 million years. Continental crust is a complicated structure and has a variable composition. Oceanic crust is thinner than continental crust. Its average density is 2.7 g/cm3 and average thickness of only 6 km. (3.7 miles), with the simple layered structure of the uniform composition.

Question 7.
Discuss how do seismic waves suggest layering of the earth’s interior.
Answer:

Seismic waves are the earthquake waves. The movement of seismic waves tells us a great deal about the earth’s internal structure. The shock waves arising from earthquakes pass through the interior of the earth in different ways and provide evidence about the inaccessible interior region of the earth. Seismic waves are of two types -: body waves and surface waves. Body waves travel through the solid body of the earth, whereas surface waves move along the free upper crust of the earth. Surface waves, in turn, are of two types, viz, Rayleigh waves and Love waves.

Body waves also have two sub-types, viz, ‘P’ waves and ‘S’ waves. ‘P’ (primary waves) pass through all the medium solid, liquid and gaseous, whereas ‘S’ or secondary waves do not pass through liquids.

Based on the above observation related to seismic waves, the interior has been divided into three layers – core, mantle and crust.

The core is the innermost or central layer, the crust is the outermost layer, whereas mantle lies in the middle. Since ‘S’ waves cannot pass through the central part of the earth or core, it suggests that this part is made up of a medium which is not solid. This proves that the earth’s outer core is in a liquid state in contrast to the surrounding mantle which is solid.
Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-2

The ‘P’ waves make an abrupt drop in velocity at the mantle-core _ boundary, whereas ‘S’ waves terminate here. Based on the behaviour of seismic waves, the mantle is sub-divided into two major parts – the upper mantle and the lower mantle.

The crust is distinguished from the mantle by the presence of an abrupt change in velocity of seismic waves. The change in rigidity, in turn, is due to change in the universal composition or in the physical state of the rocks.

Question 8.
Describe the earth’s mantle.
Answer:

The mantle is that part of the earth’s interior which lies between the core and the crust. It consists of solid ultrabasic rocks. The mantle is about 2900 km thick with a density of about (3.0 to 3.4) g/cm3. The lower surface of the mantle forces Gutenberg Discontinuity, the uppermost layer forces the Asthenosphere.

The ‘P’ or primary earthquake waves make an abrupt drop in velocity at the mantle-core boundary, whereas ‘S’ or secondary waves terminate at this boundary. . It is because of the presence of a plane of the discontinuous surface between the core and the mantle known as Gutenberg Discontinuity.
Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-3

Based on the behaviour of seismic waves, the mantle is sub-divided into two major parts – the upper mantle and the lower mantle. The upper mantle extends from the crust to a depth of about 650 km. and includes 300 to 400 km wide Asthenosphere, the uppermost part of the mantle. Rocks in Asthenosphere behave as an elastic solid. This region is referred to as the low-velocity zone.

Question 9.

How do the waves of different types tell us about the changes in the nature of different layers of the earth’s interior?
Answer:

Seismic waves are the earthquake waves. The movement of seismic waves tells us a great deal about the earth’s internal structure. The shock waves arising from earthquakes pass through the interior of the earth in different ways and provide evidence about the inaccessible interior region of the earth. Seismic waves are of two types -: body waves and surface waves. Body waves travel through the solid body of the earth, whereas surface waves move along the free upper crust of the earth. Surface waves, in turn, are of two types, viz, Rayleigh waves and Love waves.

Body waves also have two sub-types, viz, ‘P’ waves and ‘S’ waves. ‘P’ (primary waves) pass through all the medium – solid, liquid and gaseous, whereas ‘S’ or secondary waves do not pass through liquids.

Based on the above observation related to seismic waves, the interior has been divided into three layers – core, mantle and crust.

The core is the innermost or central layer, the crust is the outermost layer, whereas mantle lies in the middle. Since ‘S’ waves cannot pass through the central part of the earth or core, it suggests that this part is made up of a medium which is not solid. This proves that the earth’s outer core is in a liquid state in contrast to the surrounding mantle which is solid.

Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-2

The ‘P’ waves make the abrupt drop in velocity at the mantle-core boundary, whereas ‘S’ waves terminate here. Based on the behaviour of seismic waves, the mantle is sub-divided into two major parts – the upper mantle and the lower mantle.

The crust is distinguished from the mantle by the presence of an abrupt change in velocity of seismic waves. The change in rigidity, in turn, is due to change in the universal composition or in the physical state of the rocks.

The mantle is that part of the earth’s interior which lies between the core and the crust. It consists of solid ultrabasic rocks. The mantle is about 2900 km thick with a density of about (3.0 to 3.4) g/cm3. The lower surface of the mantle forces Gutenberg Discontinuity, the uppermost layer forces the Asthenosphere.

The ‘P’ or primary earthquake waves make an abrupt drop in velocity at the mantle-core boundary, whereas ‘S’ or secondary waves terminate at this boundary. . It is because of the presence of a plane of the discontinuous surface between the core and the mantle known as Gutenberg Discontinuity.
Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-3

Based on the behaviour of seismic waves, the mantle is sub-divided into two major parts – the upper mantle and the lower mantle. The upper mantle extends from the crust to a depth of about 650 km. and includes 300 to 400 km wide Asthenosphere, the uppermost part of the mantle. Rocks in Asthenosphere behave as elastic solid. Th,is region is referred to as the low-velocity zone.
Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-4

Question 10.
Distinguish between :
1. Body Waves and Surface Waves
2. The crust of the earth and Core of the earth
3. Gutenberg Discontinuity and Mohorovicic Discontinuity
Answer:

1. Body waves and Surface Waves :
Seismic waves are the earthquake waves. The movement of seismic waves tells us a great deal about the earth’s internal structure. The shock waves arising from earthquakes pass through the interior of the earth in different ways and provide evidence about the inaccessible interior region of the earth. Seismic waves are of two types -: body waves and surface waves. Body waves travel through the solid body of the earth, whereas surface waves move along the free upper crust of the earth. Surface waves, in turn, are of two types, viz, Rayleigh waves and Love waves.

Body waves also have two sub-types, viz, ‘P’ waves and ‘S’ waves. ‘P’ (primary waves) pass through all the medium – solid, liquid and gaseous, whereas ‘S’ or secondary waves do not pass through liquids.

Based on the above observation related to seismic waves, the interior has been divided into three layers – core, mantle and crust.

The core is the innermost or central layer, the crust is the outermost layer, whereas mantle lies in the middle. Since ‘S’ waves cannot pass through the central part of the earth or core, it suggests that this part is made up of a medium which is not solid. This proves that the earth’s outer core is in a liquid state in contrast to the surrounding mantle which is solid.

Class 11 Geography Important Questions Chapter 3 Interior of the Earth im-2

The ‘P’ waves make an abrupt drop in velocity at the mantle-core boundary, whereas ‘S’ waves terminate here. Based on the behaviour of seismic waves, the mantle is sub-divided into two major parts – the upper mantle and the lower mantle.

The crust is distinguished from the mantle by the presence of an abrupt change in velocity of seismic waves. The change in rigidity, in turn, is due to change in the universal composition or in the physical state of the rocks.

2. Crust of the earth and Core of the earth:

The crust of the EarthThe core of the Earth
l. This is the outermost layer of the earth.1. This is the innermost layer ofof the earth.
2. The average density is 2.73g/cm3.2. The average density is I7.2g/cm3.
3. It covers about 0.5% part of the earth.3. It covers about 83% part of thethe earth.
4. It is made up of silica andaluminium.4. It is made up of nickel and ferrous.

3. Gutenberg Discontinuity and Mohorovicic Discontinuity:

Gutenberg DiscontinuityMohorovicic Discontinuity
1. It is the boundary between the mantle and the core.1. It is the boundary between the crust arid the mantle.
2. It was observed by Beno Gutenberg in 1926.2. It was observed by a Yugoslavian seismologist Mohorovicic in 1909.
3. The ‘P’ waves make an abrupt drop in the velocity at the mantle-core boundary, while S-waves disappear here.3. The surface of a sudden increase in wave velocity, which separates crust above from the mantle below is Mohorovicic discontinuity.
4. This making a place at the dis-continuous surface between the core and mantle is known as Gutenberg discontinuity.
Read More