CBSE Class 10 Science Syllabus 2024-25

CBSE has released the Latest Updated Syllabus for the New Academic Session 2024-25 on March 23rd, 2024, for class 10. 

CBSE Board has released the latest Class 10 Science syllabus which is to be strictly followed. Below please find our detailed analysis of Board Paper pattern, Unit-wise summary, Objectives, FAQs for the New Session 2024-25.

We have also updated Oswal Gurukul Books as per the Latest Paper Pattern prescribed by Board for Science Curriculum.

Students can directly access the CBSE Science Syllabus for Class 10 of the academic year 2024-25 by clicking on the link below.

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CBSE Class 10 Science Latest Syllabus 2024-25

Unit No. Unit Marks
I Chemical Substances-Nature and Behaviour 25
II World of Living 25
III Natural Phenomena 12
IV Effects of Current 13
V Natural Resources 05
  Total 80
  Internal assessment 20
  Grand Total 100

CBSE Class 10 Science Syllabus 2024-25: Unit-wise Summary

Theme: Materials

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, 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 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: 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 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); agnification. 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 (excluding colour of the sun at sunrise and sunset)

Theme: How Things Work

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

Theme: Natural Resources

Unit V: Natural Resources

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

Note for the Teachers:

  1. The chapter Management of Natural Resources (NCERT Chapter 16) will not be assessed in the year-end examination. However, learners may be assigned to read this chapter and encouraged to prepare a brief write up to any concept of this chapter in their Portfolio. Thismay be for Internal Assessment and credit may be given Periodic Assessment/Portfolio).
  2. The NCERT text books present information in boxes across the book. These help students to get conceptual clarity. However, the information in these boxes would not be assessed in the year-end examination.

CBSE Class 10 Science Practical Syllabus 2024-25

Practical should be conducted alongside the concepts taught in theory classes


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


    • Dilute Hydrochloric Acid
    • Dilute NaOH solution
    • Dilute Ethanoic Acid solution
    • Lemon juice
    • Water
    • Dilute Hydrogen Carbonate solution

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


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

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


    • Combination reaction
    • Decomposition reaction
    • Displacement reaction
    • Double displacement reaction
    1. Action of water on quicklime
    2. Action of heat on ferrous sulphate crystals
    3. Iron nails kept in copper sulphate solution
    4. Reaction between sodium sulphate and barium chloride solutions

3. 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)

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): Unit-I


    • Odour
    • solubility in water
    • effect on litmus
    • reaction with Sodium Hydrogen Carbonate

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

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


10. Determination of the focal length of: 


    • Concave mirror
    • 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 and Hydra with the help of prepared slides.


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


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


CBSE Class 10 Science Question Paper Design 2024-25

Theory (80 marks)

Competencies Total
Demonstrate Knowledge and Understanding 46 %
Application of Knowledge/Concepts 22 %
Formulate, Analyze, Evaluate and Create 32 %


  • 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 provided.

Internal Assessment

Description Total Marks
Periodic Assessment - 05 marks + 05 marks 05 marks + 05 marks
Subject Enrichment (Practical Work) - 05 marks 05 marks
Portfolio - 05 marks 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.
  • Formulate, Analyze, Evaluate and Create
  • Interpret, analyze, compare, contrast, examine, evaluate, discuss, construct, etc.

The Changes for Class 10 (2024-25) Year-end Board Examinations are as under:

Periodic Assessment Academic Session 2023-24 Academic Session 2024-25
Composition of question paper for year-end examination/ Board Examination (Theory)
  • Competency Focused Questions in the form of MCQs/ Case Based Questions, Source-based Integrated Questions or any other type = 50%
  • Select response type questions (MCQ) = 20%
  • Constructed response questions (Short Answer/Long Answer Type Questions, as per existing pattern) = 30%
  • Competency Focused Questions in the form of MCQs/Case Based Questions, Source-based Integrated Questions or any other type = 50%
  • Select response type questions (MCQ) = 20%
  • Constructed response questions (Short Answer/Long Answer type Questions, as per existing pattern) = 30%

Objectives of Class 10 Science Syllabus 2024-25

The CBSE Syllabus for Class 10 Science 2024-25 has been developed with the aim of the following:

  1. To expose students to experience hands-on activities as well as modes of reasoning that are typical of the subject.
  2. The marking scheme, typology of questions, and the details of individual chapters help the students to effectively plan their study schedules.
  3. To develop cognitive abilities and curiosity in children to help them apply scientific knowledge in their daily lives.
  4. The syllabus is prepared cultivate interest in students to study Science and its various concepts in an interesting way.

FAQs on CBSE Class 10 Science Syllabus 2024-25

Ans: The total marks for CBSE Class 10 Science 2023-24 is 100.

Out of 100 marks, 20 marks are allotted for the Internal Assessment, and 80 marks are for the Theory paper.

The Question Paper is divided into 5 sections.

i. Section A consists of 20 objective type questions carrying 1 mark each.

ii. Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions should be in the range of 30 to 50 words.’

iii. Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these questions should be in the range of 50 to 80 words

iv. Section D consists of 3 Long Answer type questions carrying 05 marks each. (Word limit – 80 to 120 words)

v. Section E consists of 3 source-based/case-based units of assessment of 04 marks each with sub-parts.

Ans: Chapter 5 (Periodic Classification of Elements), Chapter- 14 (Sources of energy), and Chapter 16 (Management of Natural Resources) was deleted from CBSE Science Class 10 Syllabus 2023-24.

Ans: i. Be clear about the syllabus, exam pattern, question types, and concepts.

ii. Be thorough with the NCERT chapters.

iii. Solve ample sample papers.

iv. Do a lot of revision work.

v. Solve previous years’ question papers.

vi. Do not mug up everything. Try to answer logically.

Ans: Oswal-Gurukul CBSE Most Likely Question Bank, 36 Sample Papers, CBSE Last 10 Years Solved Papers, CBSE Chapterwise Last Years Solved Papers, and All in 1 Guide Book for CBSE Class X are your one-stop solution for important questions pertaining to Science as per Class 10 CBSE Board Syllabus 2023-24. All the books have been prepared by Oswal’s eminent subject matter experts in a student-friendly language. 

Students can also create their own tests online at and gauge their progress in an interesting way through self-assessments.

Ans: Students can find CBSE Class 10 Science Syllabus 2023-24 at the CBSE official website or check our CBSE Class 10 Syllabus.

CBSE Class 10 Science Deleted Syllabus 2023-24

Subject , Unit & Chapters Topics Deleted
Unit I: Chemical Substances - Nature and Behaviour
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
Heredity and Evolution Basic concepts of evolution
Unit IV: Effects of Current
Magnetic effects of current Electric Motor, Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule, Electric Generator
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.
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.

2023-24 Reduced Syllabus

(for reference purposes only)

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