Chapter 3 Electoral Politics Class 9 Important Questions | NCERT Social-Science Chapter-3 – Edu grown

Question.1 What the minimum conditions of a democratic election?Answer:The minimum conditions of a democratic elections are: Everyone should be able to choose. This means that everyone should have one vote and every vote should have equal value. There should be

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Ch 15 Improvement in Food Resources Class 9 Important Questions | NCERT Science Chapter-15 – Edu grown

QUESTION .1 Enumerate the advantages of mixed farming.Answer:Following are the main advantages of mixed farming: Farmyard manure is made available from livestock which is used again in agricultural farms. Organic waste materials like straw, husks and chaffs of grains, household

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Ch 14 Natural Resources Class 9 Important Questions | NCERT Science Chapter-14 – Edu grown

Question.1 List any three human activities that you think would lead to air pollution. ]SAII – 2013]Answer. Human activities that would lead to air pollution are : Excessive use and burning of fossil fuels like coal and petroleum produces different oxides

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Chapter 13 Why do we fall ill? Class 9 Important Questions | NCERT Science Chapter-13 – Edu grown

Question.1(i) What are the various ways to prevent the diseases ?(ii) What is immunisation ?Answer.(i) We can prevent disease in two ways :(a) General ways: By preventing exposure to infectious microbes.  By providing safe drinking water and public hygiene.  By

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Chapter 12 Sound Class 9 Important Questions | NCERT Science Chapter-12 – Edu grown

Question.1 Distinguish between transverse and longitudinal waves. (Three points) [SAII-2014]Answer.Transverse waves(a) Particles the medium vibrate at right angles.(b) Alt. crests and troughs formed.(c) e.g., water wavesvLongitudinal waves(a) Particles vibrate parallel to the direction of waves.(b) Alt. compressions, rarefaction formed.(c) e.g.,

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Chapter 11 Work and Energy Class 9 Important Questions | NCERT Science Chapter-11 – Edu grown

Q.1 What is meant by mechanical energy ? State its two forms. State the law of conservation of energy. Give an example in which we observe a continuous change of one form of energy into another and vice-versa.(b) Calculate the

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Ch 4 Structure of Atom Class 9 Important Questions | NCERT Science Chapter-4- Edu grown

Q 1. Name the three sub-atomic particles of an atom.Answer: The sub-atomic particles of an atom are Q 2. Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?Answer: Q

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