CBSE Class 10 Science Syllabus 2024-25 - CBSE Class 10th Science Syllabus Download PDF

CBSE Class 10 Science Syllabus 2025: The Central Board of Secondary Education has recently released the revised CBSE Class 10 Syllabus 2024 on its official website. The CBSE Class 10 Science Syllabus 2024 comprises 5 units namely Chemical Substances-Nature and Behaviour, World of Living, Natural Phenomena, Effects of Current, and Natural Resources. Before the introduction of the CBSE 10th Date Sheet 2024, students should begin studying the CBSE 10th Science syllabus for the academic year 2024. CBSE Class 10 Science paper will be for a total of 80 marks with 20 marks for Internal Assessment. In addition to this, CBSE Class 10 Syllabus also includes a list of Practicals to be performed. The CBSE Class 10 examination will be held from February 15 to April 10, 2024. Students appearing for CBSE Class 10 Science, must go through the whole article to know about the CBSE Class 10th Science Syllabus, Exam Pattern, and Preparation Tips.

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CBSE Class 10 Science Syllabus 2025 PDF

Students can now download the CBSE Class 10 Science Syllabus from the official website of CBSE Academics. You can check out the direct PDF from the table given below:

CBSE Class 10 Science Syllabus 2025 PDF

CBSE Class 10 Science Syllabus 2025: Structure

Check the unit-wise marks distribution tabulated below:

Units	Marks
Unit 1: Chemical Substances-Nature and Behaviour	25
Unit 2: World of Living	25
Unit 3: Natural Phenomena	12
Unit 4: Effects of Current	13
Unit 5: Natural Resources	05
Total	80
Internal assessment	20
Grand Total	100

Download CBSE Previous Year Question Papers Class 10

CBSE Class 10 Science Syllabus 2025- Unit-wise

Unit 1: Chemical Substances – Nature and Behaviour

Theme	Topics
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.

Unit II: World of Living

Themes	Topics
Life processes	‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in plants and animals
Control and co-ordination in animals	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).

Unit III: Natural Phenomena

Themes	Topics
Reflection of light by curved surfaces	Reflection of light by curved surfaces; Images formed by spherical mirrors, centre of curvature, principal axis, principal focus, focal length, mirror formula
Refraction of light by spherical lens	Refraction; Laws of refraction, refractive index. Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula
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	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

Unit IV: Effects of Current

Themes	Topics
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 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.

Unit V: Natural Resources

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

CBSE Class 10 Science Exam Pattern 2024-25

CBSE Class 10 Science Exam pattern 2024-25 consists of a total of 27 questions. The questions are divided into Section A and Section B. Section A includes 2 very short answer type (VSA) questions of 1 mark each, 3 short answer type questions for 2 marks each, 10 short answer type questions for 3 marks each, and 6 long answer type questions of 5 marks each. Section B will consist of 6 questions of 2 marks each which will be based on practical knowledge.

The students can check the table below to understand the exam pattern for class 10th Science subject:

Type of Question	No of Questions
Remembering (Knowledge-based)	4
Understanding (Comprehension)	7
Application	5
High Order Thinking Skills (HOTS)	2
Inference & Evaluation	3

CBSE Class 10 Science Question Paper Design 2025 (Theory)

CBSE Class 10 Exam Pattern for Science is designed to examine the students on 3 parameters as shown below along with the Typology of the Questions asked in the CBSE Class 10 Science Exam. These are the types of Questions asked:

• Very Short Answer (VSA) - objective type questions,

• Assertion – Reasoning-type questions;

• Short Answer & Long Answer;

• Source-based/ Case-based/ Passage-based/ Integrated assessment questions.

The CBSE 10th Science Syllabus covers the following assessment areas.

Competencies	Total
Demonstrate Knowledge and Understanding	46%
Application of Knowledge/Concepts	22%
Analyze, Evaluate, and Create	32%
Total	100%

CBSE Class 10 Science Internal Assessment Paper Design

• (i) Periodic Assessment - 05 marks + 05 marks

• (ii) Subject Enrichment (Practical Work) - 05 marks

• (iii) Portfolio - 05 marks

CBSE Class 10 Science Syllabus 2025 for Practical Exams

Students should not underrate the significance of practicals because the internal assessment is worth a total of 20 marks. They should concentrate on the practicals as well as the theory covered by the CBSE Syllabus for Class 10 Science. This will assist students in receiving excellent scores and gaining an understanding of the theoretical topics through experiments and practicals. The CBSE Class 10 Science Practical syllabus is therefore available here.

CBSE Class 10 Science Practical Syllabus

1. A. Finding the pH of the following samples by using pH paper/universal indicator: Unit-I
(i) Dilute Hydrochloric Acid
(ii) Dilute NaOH solution
(iii) Dilute Ethanoic Acid solution
(iv) Lemon juice
(v) Water
(vi) 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:

A. Combination reaction
B. Decomposition reaction
C. Displacement reaction
D. Double displacement reaction

i) Action of water on quicklime
ii) Action of heat on ferrous sulfate crystals
iii) Iron nails kept in copper sulfate solution
iv) Reaction between sodium sulfate and barium chloride solutions

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

• ZnSO ₄ (aq)

• FeSO ₄ (aq)

• CuSO ₄ (aq)

• Al ₂ (SO ₄ ) ₃ (aq)

B. 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 determining its resistance. Also plotting a graph between V and I.

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

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, and angle of emergence and interpret the result. Unit - III
12. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides. Unit-II
13. Tracing the path of the rays of light through a glass prism. Unit-III
14. Identification of the different parts of an embryo of a dicot seed (Peas, gram, or red kidney bean).

Also Read

CBSE Class 10 Mathematics Syllabus 2024-25	CBSE Class 10 Social Science 2024-25 Syllabus
CBSE Class 10 English Syllabus 2024-25	CBSE Class 10 Hindi Syllabus 2024-25

CBSE Class 10 Science Deleted Syllabus 2024-25

Students can check the table below to get a proper idea of the topics excluded from the

Chapter Name	Page No.	Dropped Topics/Chapter
Chapter 5: Periodic Classification of Elements	79–92	Full chapter
Chapter: 9 Heredity and Evolution (Chapter name replaced with: Heredity)	147-158	Box item: Charles Robert Darwin Box item: Origin of life on earth Box item: How do fossils form layer by layer Box item: Molecular phylogeny 9.3 Evolution 9.3.1 An Illustration 9.3.2 Acquired and Inherited Traits 9.4 Speciation 9.5 Evolution and Classification 9.5.1 Tracing Evolutionary Relationships 9.5.2 Fossils 9.5.3 Evolution by Stages 9.6 Evolution Should Not Be Equated With ‘Progress’ 9.6.1 Human Evolution
Chapter: 11 The Human Eye and the Colourful World	188, 189, 196 and 197	Two box items: • Damage to or malfunction of any part of the visual system... • Why do we have two eyes for vision and not just one? 11.6.3 Colour of the Sun at Sunrise and Sunset
Chapter: 12 Electricity	201	Box item: ‘Flow’ of charges inside a wire
Chapter: 13 Magnetic Effects of Electric Current	232–237	Box item: Michael Faraday 3.4 Electric Motor 3.5 Electromagnetic Induction 3.6 Electric Generator
Chapter: 14 Sources of Energy	242–255	Full chapter
Chapter: 16 Sustainable Management of Natural Resources	266–280	Full chapter

Reference Books for CBSE Class 10 Science Syllabus 2025

• Science-Text book for class X- NCERT Publication

• Assessment of Practical Skills in Science- Class X- CBSE Publication

• Laboratory Manual-Science-Class X, NCERT Publication

• Exemplar Problems Class X – NCERT Publication

CBSE 10 Science Syllabus 2025: Preparation Tips

Students can follow the preparation tips provided below to prepare for Class 10 Science exam. With these tips, students can perform their best in the board exams.

• Understand the Syllabus and Exam Pattern - It is necessary for students to familiarize themselves with the CBSE Class 10th Science syllabus 2025. It will provide students an idea of the types of questions (objective, short answer, and long answer). In addition, they will also learn about the marking scheme of the subject. The marks weightage for each question, number of marks for each of the questions, and total marks can be known in advance
• Create a Study Schedule - Students can follow a study timetable that enables them to cover all topics adequately. They can allocate more time to subjects or topics they find difficult. Students can break down the syllabus into smaller units. This makes it manageable for them to complete the syllabus in time.
• Focus on Concepts - Students are suggested to avoid rote learning. They should try to understand the concepts instead of memorizing them. This will help them to apply their knowledge in solving a variety of questions. The students will be able to solve a variety of questions related to the concepts.
• Rely on NCERT Books - The CBSE board recommends NCERT books for preparation of the syllabus. Students can stick to the CBSE Class 10th NCERT book for the Science exam. The book has detailed information and all the concepts are explained in easy language. Students can prepare the topics from these books and try to solve questions to solve their knowledge.
• Practice Questions Regularly - Students can regularly solve questions from previous years’ question papers to test their level of preparation. This will introduce students to the exam pattern, types of questions, and prepare students to answer all questions in board exams. They can also take mock tests online. This boosts the confidence of students and prepares them to perform better in the board exams.

Students going to prepare for the Class 10 Science exam can visit the page at regular intervals. All the details will be updated here. With good idea of the syllabus, students will be able to solve the questions and perform better in the board exams.