CBSE Class 10 Science Course Structure 2022-2023

In the CBSE Class 10 curriculum, students are introduced to various branches of science, including Physics, Chemistry, and Biology. The subject is designed to help students understand the fundamental concepts and principles of science, as well as to develop their critical thinking, analytical, and problem-solving skills. Through a combination of theoretical knowledge and practical applications, students are exposed to the wonders of the natural world and the role of science in shaping our understanding .

1Chemical Substances-Nature and Behavior25
2World of Living25
3Natural Phenomena12
4Effects of Current13
5Natural Resources05
6 Total 80
7Internal assessment20
Grand Total 100

You can download whole science syllabus from below mentioned link.

Theme: Materials

Unit 1: Chemical Substances – Nature and Behaviour

Chemical reactions: 

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

Acids, bases and salts: 

Their definitions in terms of furnishing of H+ and OH– ions, General properties, examples and uses, neutralization, 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.

Metals and nonmetals: 

Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention.

Carbon compounds:

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

Theme: The World of the Living

Unit 2: World of Living

Life processes: 

‘Living Being’s concept of nutrition, respiration, transport and excretion in plants and animals.

Control and co-ordination in animals and plants:

Tropic movements in plants; Introduction of plant hormones; Control and co-ordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormones.


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.

Heredity and Evolution: Heredity;

Mendel’s contribution- Laws for inheritance of traits: Sex determination: brief introduction: (topics excluded – evolution; evolution and classification and evolution should not be equated with progress).

Theme: Natural Phenomena

Unit 3: Natural Phenomena

Reflection of light 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.

Human eye: Functioning of a lens in human eye, defects of vision and their corrections, applications of spherical mirrors and lenses. Refraction of light through a prism, dispersion of light, scattering of light, applications in dailylife (excluding colour of the sun at sunrise and sunset).

Theme: How Things Work Unit

4: Effects of Current

Electricity 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.

Magnetic effects of current: Magnetic field, field lines, field due to a current carryingconductor, field due to current carrying coil or solenoid; Force on current carrying conductor, Fleming’s Left Hand Rule, Direct current. Alternating current: frequency of AC. Advantage of AC over DC. Domestic electric circuits.

Theme: Natural Resources

Unit 5: Natural Resources Our environment:

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


CBSE Class 10 Science is an essential subject that provides students with a comprehensive understanding of the natural world and its laws. Through a combination of theoretical knowledge and practical applications, students are exposed to the wonders of science and its relevance in their everyday lives. Additionally, the subject helps students develop essential skills that are highly valued in higher education and future careers.


1.What is the syllabus of CBSE Class 10 Science?

A: The CBSE Class 10 Science syllabus includes topics such as electricity, magnetism, light, sound, chemical reactions, genetics, and evolution, among others.

2: What is the practical exam in CBSE Class 10 Science?

A: The practical exam in CBSE Class 10 Science is a laboratory-based assessment of students’ experimental and investigative skills.

3: Why is CBSE Class 10 Science important?

A: CBSE Class 10 Science is important because it provides students with a comprehensive understanding of the natural world and its laws. It also helps develop essential skills such as critical thinking, problem-solving, and analytical reasoning.

4: What are the career options after studying CBSE Class 10 Science?

A: The career options after studying CBSE Class 10 Science include engineering, medicine, research, and other scientific fields.

You can download CBSE 10th class science pdf from here

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