The CBSE Board has released the CBSE Class 10 Science syllabus for the academic session 2024-25. Students can access the syllabus on the board's official website (cbse.gov.in). Being familiar with the latest and updated syllabus is a must as it helps students to decide their preparation strategy. They can focus on the important topics and concepts with more marks weightage for the CBSE 10th Science Board Exams 2025. Students should start their preparation at least 3 months prior to the examination. Science is a major subject in CBSE Class 10 and students must aim to score highly in it as it increases the overall percentage.
Themes in CBSE 10th Science Syllabus 2025
CBSE Class 10 Science has been devised based on five broad themes as follows:
1. Materials
2. The World of The Living
3. How Things Work
4. Natural Phenomenon and
5. Natural Resources.
It provides a clear listing of chapters along with the topics, along with them, beneath each theme. The content is specially taken care of in making it concise by deleting unnecessary topics, thus providing a focused approach to the subject matter.
Also read: CBSE 10th Maths Syllabus 2024-25: Units, Topics, Chapters, Updated Curriculum, Download PDF
Detailed CBSE Class 10 Science Syllabus 2024-25
The table below shows a detailed syllabus for CBSE 10th Science Board exams 2025 which the students must follow:
| Theme | Unit | Topics |
| Materials | Unit 1: Chemical Substances - Nature and Behaviour |
|
| The World of the Living | Unit 2: World of Living |
|
| Natural Phenomena | Unit 3: Natural Phenomena |
|
| How Things Work | Unit 4: Effects of Current |
|
| Natural Resources | Unit 5: Natural Resources |
|
CBSE Class 10 Science Course Structure
The image below shows the course structure for CBSE 10th Science Exams 2025. It depicts the marks distribution for each unit. Students can know which are the more important units which must be focused on by referring to it.
CBSE 10th Science Syllabus for Practical Exams 2025
The CBSE Science Class 10 practical syllabus lists the experiments which students need to conduct for the entire session in addition to the internal assessment. The table below provides the detailed CBSE 10th Science Practical Exams Syllabus for the academic session 2025:
| Sr. no. | Experiments | Unit |
| 1A | Finding the pH of the following samples using pH paper/universal indicator: i) Dilute Hydrochloric Acid ii) Dilute NaOH solution iii) Dilute Ethanoic Acid solution iv) Lemon juice v) Water vi) Dilute Hydrogen Carbonate solution | Unit-I |
| 1B | Studying the properties of acids and bases (HCl & NaOH) based on their reaction with: a) Litmus solution (Blue/Red) b) Zinc metal c) Solid sodium carbonate | Unit-I |
| 2 | Performing and observing the following reactions, 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 sulphate crystals iii) Iron nails kept in copper sulphate solution iv) Reaction between sodium sulphate and barium chloride solutions | Unit-I |
| 3 | Observing the action of Zn, Fe, Cu, and Al metals on the following salt solutions: i) ZnSO4(aq) ii) FeSO4(aq) iii) CuSO4(aq) iv) Al2(SO4)3(aq) Arranging Zn, Fe, Cu, and Al in decreasing order of reactivity based on the results. | Unit-I |
| 4 | Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it. Determining its resistance and plotting V-I graph. | Unit-IV |
| 5 | Determination of the equivalent resistance of two resistors connected in series and parallel. | Unit-IV |
| 6 | Preparing a temporary mount of a leaf peel to show stomata. | Unit-II |
| 7 | Experimentally demonstrating that carbon dioxide is given out during respiration. | Unit-II |
| 8 | Study of the properties of acetic acid (ethanoic acid): i) Odour ii) Solubility in water iii) Effect on litmus iv) Reaction with Sodium Hydrogen Carbonate | Unit-I |
| 9 | Studying the comparative cleaning capacity of soap in soft and hard water. | Unit-I |
| 10 | Determining the focal length of: i) Concave mirror ii) Convex lens (by obtaining the image of a distant object) | Unit-III |
| 11 | Tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measuring angles of incidence, refraction, and emergence. | Unit-III |
| 12 | Studying (a) Binary fission in Amoeba and (b) Budding in yeast and Hydra using prepared slides. | Unit-II |
| 13 | Tracing the path of the rays of light through a glass prism. | Unit-III |
| 14 | Identifying the different parts of an embryo of a dicot seed (Pea, gram, or red kidney bean). | Unit-II |
Also Read: CBSE 10th Boards Syllabus
Marking Scheme for CBSE Class 10 Science Internal Assessment 2025
The CBSE 10th Science Internal Assessment consists of 3 components. Each component carries different marks.
| Components | Marks Weightage |
| Periodic Assessment | 05 marks + 05 marks |
| Subject Enrichment (Practical Work) | 05 marks |
| Portfolio | 05 marks |
| Total | 20 marks |
Books Prescribed for CBSE Class 10 Science
The followings books are prescribed for CBSE 10th Science Exams 2025 by the board:
| Name of the book | Name of the publication |
| 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 |
Note: To know more detailed information about the CBSE 10th Science Question Paper design, and Exam Pattern, download the official CBSE 10th Science Syllabus 2025