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CBSE Class 10th Science Syllabus 2019-20 PDF

CBSE Science syllabus 2019 has 5 Units in Total that carries a weightage of 80 marks in Total in the Board Exams 2019. The Unit with highest weightage is Chemical Substances holds around 25 marks. CBSE Class 10th Science sylllabus also has practicals and the practical questions holds around 12 marks in total in CBSE Exams syllabus 2019.

CBSE Science Syllabus is important because it contains:

  • Science Unitwise Marks Weightage
  • Internal Assesment Marks
  • 2020 Board Question Paper Design
  • Important Books
  • All Topics and Chapters
  • Number of Periods for Teachers

The CBSE Science Syllabus is important both for Students and Teachers. Students gets and overview of the Chapters and Teachers get to know the number of periods they should give to each chapter.

The Science Syllabus PDF Download Link is given at the bottom of this post. before downloading I suggest you to carefully look at the syllabus and prescribed marks for each topic.

Must Check- CBSE Science Guess Papers Download

CBSE Class 10th Science Exam Pattern and Full Syllabus

Units Marks
I Chemical Substances – Nature & Behaviour 25
II World of Living 23
III Natural Phenomenon 12
IV Effects of Current 13
V Natural Resources 07
Total 80 Marks
Internal Marks 20 Marks
Grand Total 100 Marks

Unit I: 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, neutralization, oxidation and reduction.

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.

Metals and Non-metals

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 hydrocarbons 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.

Periodic Classification of Elements

Need for classification, Modern periodic table, gradation in properties, valency, atomic number, metallic and non-metallic properties.

Unit II: World of Living

Life Processes

“living being”. Basic concept of nutrition, respiration, transport and excretion in plants and animals.

Control and co-ordination in Animals and Plants

Tropic movements in plants; Introduction to plant hormones; control and co-ordination in animals : nervous system; voluntary, involuntary and reflex action, chemical co-ordination: animal hormones.


Reproduction in animal and plants (asexual and sexual) reproductive health-need for 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; Basic concepts of evolution.

Unit III: Natural Phenomenon

Reflection of light at 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.

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 daily life.

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, Inter relation between P, V, I and R.

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. Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule, Direct current. Alternating current : frequency of AC. Advantage of AC over DC. Domestic electric circuits.

Unit V: Natural Resources

Sources of energy

Different forms of energy, conventional and non-conventional sources of energy: fossil fuels, solar energy; biogas; wind, water and tidal energy; nuclear energy. Renewable versus non-renewable sources.

Our environment

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

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.

Class 10th Science Practicals Syllabus

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

  • a) Dilute Hydrochloric Acid
  • b) Dilute NaOH solution
  • c) Dilute Ethanoic Acid Solution
  • d) Lemon juice
  • e) Water
  • f) Dilute Hydrogen Carbonate solution

Studying the properties of acids and bases (HCl & NaOH) by their reaction with:

  • a) Litmus solution (Blue/Red)
  • b) Zinc metal
  • c) Solid sodium carbonate

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

  • a) Combination reaction
  • b) Decomposition reaction
  • c) Displacement reaction
  • d) Double displacement reaction
    • (i) Action of water on quick lime
    • (ii) Action of heat on ferrous sulphate crystals
    • (iii) Iron nails kept in copper sulphate solution
    • (iv) Reaction between sodium sulphate and barium chloride solutions


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

  • a) ZnSO4 (aq)
  • b) FeSO4 (aq)
  • c) CuSO4 (aq)
  • d) Al2(SO4)3 (aq)

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

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

5. Determination of the equivalent resistance of two resistors when connected in series and parallel.

6. Preparing a temporary mount of a leaf peel to show stomata.

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

8. Study of the following properties of acetic acid (ethanoic acid):

  • i) odour
  • ii) solubility in water
  • iii) effect on litmus
  • iv) reaction with sodium Hydrogen Carbonate

9. Study of the comparative cleaning capacity of a sample of soap in soft and hard water.

10. Determination of the focal length of:

  • i) Concave mirror
  • ii) Convex lens

by obtaining the image of a distant object.

11. 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.

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

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

14. Finding the image distance for varying object distances in case of a convex lens and drawing corresponding ray diagrams to show the nature of image formed.

15. Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean).

CBSE Class 10th Science Board Exam Question Paper Design 2019-20

CBSE Class 10th Science Question Paper Design

Note: All Question Will be compulsory, however, an internal choice of 33% will of provided.

CBSE Class 10th Science Internal Assesment- Practical Marks 2019-20

Internal Assessment20 Marks
Periodic Assesment (5+5)      10 Marks
Subject Enrichment (Practical Work)05 Marks
Portfolio05 Marks

Download CBSE Class 10th Science Syllabus PDF

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