Full Biology One Shot Revision Video For Class 10 Students. All Videos are According To Reduced Syllabus 2021
→ Matter around us is present in the form of elements, compounds and mixtures.
→ Elements are substances containing atoms of only one type. E.g., Na, Mg, Au, etc.
→ There are 118 elements known to us. All these have different properties.
→ To make the study of these elements easy, these elements have been divided into few groups in such a way that elements in the same group have similar properties.
Periodic classification of elements: Need for classification, early attempts at classification of elements (Dobereiner’s Triads, Newland’s Law of Octaves, Mendeleev’s Periodic Table), Modern periodic table, gradation in properties, valency, atomic number, metallic and non-metallic properties.
No Deletion
Compounds are of two types:
(i) Organic Compounds
(ii) Inorganic Compounds
→ Organic Compounds are made up of Carbons and form the basis of all living organisms.
The Covalent Bond
→ Carbon always forms covalent bond.
→ The bond formed by sharing of electron pair between two atoms are known as covalent atoms.
Carbon compounds : Covalent bonding in carbon compounds. Versatile nature of carbon. Homologous series.
| Carbon Compounds | Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydro carbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents. |
Elements can be classified as metals and non-metals on the basis of their properties.
• Examples of some metals are: Iron (Fe), Aluminium (Al), Silver (Ag), Copper (Cu)
• Examples of some non-metals are: Hydrogen (H), Nitrogen (N), Sulphur (S), Oxygen (O)
Metals and nonmetals: Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds.
| Metals and Non-metals | Basic metallurgical processes; Corrosion and its prevention. |
The sour and bitter tastes of food are due to acids and bases are present in them.
→ Acids are sour in taste and change the colour of blue litmus to red.
→ Litmus solution is a purple dye, which is extracted from lichen. When the litmus solution is neither acidic nor basic, its colour is purple.
→ Other natural materials like red cabbage leaves, turmeric, coloured petals of some flowers such as Hydrangea, Petunia and Geranium, which indicate the presence of acid or base in a solution.
Acids, bases and salts: Their definitions in terms of furnishing of H+ and OH- ions, General properties, examples and uses, concept of pH scale (Definition relating to logarithm not required), importance of pH in everyday life; preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris
No Deletion
→ Most of the substance around us undergoes various changes. Some of these changes are temporary with no new substance being formed. They are called physical changes.
→ In certain other changes the new substance formed in which the reactant or the parent loses its identity to form new substance called product. These changes are permanent changes as we won’t get the reactant back.
Chemical reactions: Chemical equation, Balanced chemical equation, implication of a balanced chemical equation, types of chemical reactions : Combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction.
No Deletion
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Magnetic Effect of Electric Current – A magnetic field is a force field that is created by magnetic dipoles and moving electric charges, and it exerts a force on other nearby moving charges and magnetic dipoles.
Magnetic effects of current: Magnetic field, field lines, field due to a current carrying conductor, field due to current carrying coil or solenoid; Force on current carrying conductor, Fleming’s Left Hand Rule, Electric Motor, Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule.
| Magnetic Effects of Current : | Electric Generator, Direct current.Alternating current: frequency of AC, Advantage of AC over DC.Domestic electric circuits |
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell’s equations.
Unit IV: Effects of Current
Electric current, potential difference and electric current. Ohm’s law; Resistance, resistivity, Factors on which the resistance of a conductor depends. Series combination of resistors, parallel combination of resistors and its applications in daily life. Heating effect of electric current and its applications in daily life. Electric power, Interrelation between P, V, I and R.
no deletion
CBSE Class 10 Science Notes Chapter 11 Human Eye and Colourful World. Human Eye: working of human eye, Persistence of vision, Power of accommodation of human eye, Defects of vision. The Human Eye: It is a natural optical instrument which is used to see the objects by human beings.
Refraction of light through a prism, dispersion of light, scattering of light, applications in daily life.
| The Human Eye and the Colourful World | Functioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lenses |
