CBSE Syllabus for Class 10 Science

Class 10 SCIENCE CBSE Syllabus Subject Code No. 086

The subject of Science plays an important role in developing well-defined abilities in cognitive, affective and psychomotor domains in children. It augments the spirit of enquiry, creativity, objectivity and aesthetic sensibility.

Upper primary stage demands that a number of opportunities should be provided to the students to engage them with the processes of Science like observing, recording observations, drawing, tabulation, plotting graphs, etc., whereas the secondary stage also expects abstraction and quantitative reasoning to occupy a more central place in the teaching and learning of Science. Thus, the idea of atoms and molecules being the building blocks of matter makes its appearance, as does Newton’s law of gravitation.

The present syllabus has been designed around seven broad themes viz. Food; Materials; The World of The Living; How Things Work; Moving Things, People and Ideas; Natural Phenomenon and Natural Resources. Special care has been taken to avoid temptation of adding too many concepts than can be comfortably learnt in the given time frame. No attempt has been made to be comprehensive.

At this stage, while science is still a common subject, the disciplines of Physics, Chemistry and Biology begin to emerge. The students should be exposed to experiences based on hands on activities as well as modes of reasoning that are typical of the subject.

Curricular Expectations

At this stage learners are expected to:

  • develop understanding of concepts, principles, theories, and laws governing the physical world, consistent with the stage of cognitive
  • develop ability to acquire and use the methods and processes of science, such as observing, questioning, planning investigations, hypothesising, collecting, analyzing and interpreting data, communicating explanations with evidences, justifying explanations, thinking critically to consider and evaluate alternative explanation,
  • conduct experiments, also involving quantitative
  • appreciate how concepts of science evolve with time giving importance to its historical prospective.
  • develop scientific temper (objectivity, critical thinking, freedom from fear and prejudice, ).
  • nurture natural curiosity, aesthetic sense, and creativity.
  • imbibe the values of honesty, integrity, cooperation, concern for life and preservation of environment.
  • develop respect for human dignity and rights, equity and

General Instructions:

There will be an Annual Examination based on the entire

The Annual Examination will be of 80 marks and 20 marks weightage shall be for Internal Assessment.

For Internal Assessment:

  1. There will be Periodic Assessment that would include:
    • For 5 marks- Three periodic tests conducted by the school. Average of the best two tests to be taken that will have a weightage of 05 marks towards the final
    • For 5 marks- Diverse methods of assessment as per the need of the class dynamics and curriculum transaction. These may include – short tests, oral test, quiz, concept maps, projects, posters, presentations and enquiry based scientific investigations etc. and use rubrics for arguing them objectively. This will also have a weightage of 05 marks towards the final
  2. Practical / Laboratory work should be done throughout the year and the student should maintain record of the same. Practical Assessment should be continuous. There will be weightage of 5 marks towards the final result. All practicals listed in the syllabus must be completed.
  3. Portfolio to be prepared by the student- This would include classwork and other sample of student work and will carry a weightage of 5 marks towards the final

CBSE Syllabus for Class 10 Science, Physics, Chemistry, Biology 2021 – 2022

COURSE STRUCTUR CLASS X (Annual ExaminationMarks: 80



IChemical Substances-Nature and Behaviour2555
IIWorld of Living2350
IIINatural Phenomena1223
IVEffects of Current1332
VNatural Resources0720
Internal assessment20
Grand Total100

 Theme: Materials (55 Periods)

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 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.

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.

Theme: The World of the Living (50 Periods)

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 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; Basic concepts of evolution.

Theme: Natural Phenomena (23 Periods)

Unit III: Natural Phenomena

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.

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.

Theme: How Things Work (32 Periods)

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.

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, Electric Generator, Direct current. Alternating current: frequency of AC. Advantage of AC over DC. Domestic electric circuits.

Theme: Natural Resources (20 Periods)

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 of Energy.

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.



Practical should be conducted alongside the concepts taught in theory classes LIST OF EXPERIMENTS

  1. Finding the pH of the following samples by using pH paper/universal indicator: Unit-I
    • Dilute Hydrochloric Acid
    • Dilute NaOH solution
    • Dilute Ethanoic Acid solution
    • Lemon juice
    • Water
    • Dilute Hydrogen Carbonate solution
  2. Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with: Unit-I
  3. Litmus solution (Blue/Red)
  4. Zinc metal
  5. Solid sodium carbonate
  6. Performing and observing the following reactions and classifying them into: Unit-I
  7. Combination reaction
  8. Decomposition reaction
  9. Displacement reaction
  10. 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
  11. Observing the action of Zn, Fe, Cu and Al metals on the following salt solutions: Unit-I
  12. ZnSO4(aq)
  13. FeSO4(aq)
  14. CuSO4(aq)
  15. Al2 (SO4)3(aq)

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

  1. 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 Unit-IV
  2. Determination of the equivalent resistance of two resistors when connected in series and parallel. Unit-IV
  3. Preparing a temporary mount of a leaf peel to show stomata. Unit- II
  4. Experimentally show that carbon dioxide is given out during Unit-II
  5. Study of the following properties of acetic acid (ethanoic acid): Unit- I
  6. Odour
  7. solubility in water
  8. effect on litmus
  9. reaction with Sodium Hydrogen Carbonate
  10. Study of the comparative cleaning capacity of a sample of soap in soft and hard Unit- I
  11. Determination of the focal length of: Unit-III
  12. Concave mirror
  13. Convex lens by obtaining the image of a distant object.
  1. 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 Unit – III
  2. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared Unit-II
  3. Tracing the path of the rays of light through a glass Unit-III
  4. 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. Unit-III
  5. Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean). Unit-II


Assessment Areas (Theory) 2021-22 (Class X) Science (086) Time: 3 hrs.Maximum Marks: 80 Marks


Demonstrate Knowledge and Understanding46 %
Application of Knowledge/Concepts22 %
Analyze, Evaluate and Create32 %


  • Typology of Questions: VSA including objective type questions, Assertion – Reasoning type questions;SA; LA; Source-based/ Case-based/ Passage-based/ Integrated assessment questions.
  • An internal choice of approximately 33% would be

Internal Assessment (20 Marks)

  • Periodic Assessment – 05 marks + 05 marks
  • Subject Enrichment (Practical Work) – 05 marks
  • Portfolio – 05 marks

Suggestive verbs for various competencies

  • Demonstrate Knowledge and Understanding

State, name, list, identify, define, suggest, describe, outline, summarize, etc.

· Application of Knowledge/Concepts

Calculate, illustrate, show, adapt, explain, distinguish, etc.

· Analyze, Evaluate and Create

Interpret, analyze, compare, contrast, examine, evaluate, discuss, construct, etc.


CBSE Syllabus for Class 10 Science PDF Download NCERT Curriculum

You can download the CBSE Syllabus for Class 10 Science PDF Download. The link for download CBSE Syllabus For Class 10 Science (New NCERT Curriculum) is given below:


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