CBSE Class 10 Science Syllabus 2021-22

                        TERM - I

Unit I: Chemical Substances - Nature and Behaviour

Chapter -1 Chemical reactions and equations

Chemical reactions: Chemical equation, Balanced chemical equation, implications of a balanced chemical equation, types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction.

Chapter – 2 Acids, Bases and Salts

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.

Chapter – 3 Metals and non – metals

Metals and nonmetals: Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds.

Unit II: World of Living

Chapter – 6 Life processes

Life processes: ‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in plants

and animals.

Unit III: Natural Phenomena

Chapter – 10 Light – Reflection and Refraction

Reflection of light by curved surfaces; Images formed  by spherical mirrors,  centre of curvature, principal axis, principal focus, focal length, mirror formula (Derivation not required), magnification.

Refraction; Laws of refraction, refractive index.

Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula (Derivation not required); Magnification. Power of a lens.

Chapter – 11 Human eye and colourful world

Refraction of light through a prism, dispersion of light, scattering of light, applications in daily life.

                                           TERM - II

Unit I: Chemical Substances - Nature and Behaviour

Chapter – 4 Carbon and its compounds

Carbon compounds: Covalent bonding in carbon compounds. Versatile nature of carbon.Homologous series.

Chapter – 5 Periodic classification of elements

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.

Unit II: World of Living

Chapter – 8 How do organisms reproduce?

Reproduction: Reproduction in animals and plants (asexual and sexual) reproductive health-need and

methods of family planning. Safe sex vs HIV/AIDS.Child bearing and women’s health.

Chapter – 9 Heredity and Evolution

Heredity: Heredity; Mendel’s contribution- Laws for inheritance of traits: Sex determination: brief introduction;

Unit IV: Effects of Current

Chapter – 12 Electricity

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.

Chapter – 13 Magnetic effects of current

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.

Unit V: Natural Resources

Chapter – 15 Our Environment

Our environment: Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances.

                               ONLY FOR INTERNAL ASSESSMENT

Chapter – 16 Management of natural resources: Conservation and judicious use of natural resources. Forest and wild life; Coal and Petroleum conservation.Examples of people’s participation for conservation of natural resources. Big dams: advantages and limitations; alternatives, if any. Water harvesting.Sustainability of natural resources.

PRACTICALS

Practical should be conducted alongside the concepts taught in theory classes.

                                                 TERM-I

LIST OF EXPERIMENTS

1. A. Finding the pH of the following samples by using pH paper/universal indicator:

   1. Dilute Hydrochloric Acid

   2. Dilute NaOH solution

   3. Dilute Ethanoic Acid solution

   4. Lemon juice

   5. Water

   6. Dilute Hydrogen Carbonate solution

B. Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with:

1. Litmus solution (Blue/Red)

2. Zinc metal

3. Solid sodium carbonate

2.Performing and observing the following reactions and classifying them into:

1. Combination reaction

2. Decomposition reaction

3. Displacement reaction

4. Double displacement reaction

• Action of water on quicklime

• Action of heat on ferrous sulphate crystals

• Iron nails kept in copper sulphate solution

• Reaction between sodium sulphate and barium chloride solutions.

3. A. Observing the action of Zn, Fe, Cu and Al metals on the following salt solutions:

1. ZnSO4(aq)

2. FeSO4(aq)

3. CuSO4(aq)

4. Al2 (SO4)3(aq)

B. Arranging Zn, Fe, Cu and Al (metals) in the decreasing order of reactivity based on the above result.

4. Experimentally show that carbon dioxide is given out during respiration.

5. Determination of the focal length of (i) Concave mirror and (ii) Convex lens by obtaining the image of a distant object.                                      

6. Tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measure the angle of incidence, angle of refraction, angle of emergence and interpret the result.                                                                                 

7.Tracing the path of the rays of light through a glass prism.                        

                                       TERM-II

LIST OF EXPERIMENTS

1. Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it and determining its resistance. Also plotting a graph between V and I.

2. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides.

                               Assessment Areas (Theory) 2021-22 (Class X)

Note:

• Internal choice would be provided.

Internal Assessment – Term I and II (10 Marks each)

• Periodic Assessment - 03 marks

• Multiple Assessment – 02 marks

• Subject Enrichment (Practical Work) - 03 marks

• Portfolio - 02 marks