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The CBSE Class 10 Science Syllabus for the 2025–26 school year has been made public. The full syllabus is available for download by students on the official website, cbseacademic.nic.in.
- Physics, chemistry, and biology are the three primary subjects covered in the science curriculum, which is organised into 5 main units.
- The two most significant units with the highest weighting among these are World of Living and Chemical Substances, each worth 25 marks.
- The total score is 100, which includes 80 points for the theory paper and 20 points for the internal assessment.
- A minimum of 33% of the total score is required to pass the board exam.
- The 30% syllabus reduction has been maintained by CBSE for 2025–2026. Chapters like Energy Sources, Periodic Classification of Elements, and Management of Natural Resources are still not included.
In this article, you can understand the entire syllabus to better prepare and focus on the chapters that carry the most weightage.
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Key Summary
- In this article we discussed the CBSE class 10 science syllabus 2026, including weightage, important and deleted topics, prescribed books and pdfs, and previous year papers.
- The CBSE class 10 science syllabus can be downloaded on its official website, cbseacademic.nic.in.
- The CBSE Class 10 Science syllabus includes physics, chemistry, and biology, divided into 5 units.
- The highest weightage is for Chemical Substances and World of Living, 25 marks each.
- The theory paper is 80 marks, and the internal assessment is 20 marks, with a minimum passing of 33%.
- CBSE has maintained a 30% syllabus reduction, removing Energy Sources, Periodic Classification, and Management of Natural Resources.
- What is the syllabus of CBSE Class 10 Science?
- CBSE Class 10 Science Practical Syllabus
- CBSE Class 10 Science Marks Weightage
- CBSE Class 10 Science Syllabus: Important Topics
- CBSE Class 10 Science Prescribed Books
- CBSE Class 10 Science Syllabus: NCERT Book PDF
- CBSE Class 10 Science Syllabus: Previous Year Question Paper
- CBSE Class 10 Science Exam Preparation Tips
- FAQs
What is the syllabus of CBSE Class 10 Science?
The official website http://cbseacademic.nic.in now has the CBSE Class 10 Science syllabus for the 2025–2026 school year.
The table below is a comprehensive list of the topics covered in each chapter of the CBSE Class 10 Science Syllabus 2025–26. Students can review the entire syllabus and adjust their exam preparation accordingly.
| Unit | Theme/Title | Key Topics Covered |
|---|---|---|
| I | Chemical Substances—Nature and Behaviour |
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| II | World of Living |
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| III | Natural Phenomena |
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| IV | Effects of Current |
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| V | Natural Resources |
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CBSE Class 10 Science Practical Syllabus
The CBSE Class 10 Science Syllabus includes 14 practicals that the CBSE has prescribed. Students can find the CBSE Class 10 Science Practical Syllabus in the table below.
Experiments from Unit I & II (Chemistry + Biology)
| Exp. No. | Practical Activity | Unit |
|---|---|---|
| 1A | Finding the pH of samples (HCl, NaOH, Ethanoic acid, Lemon juice, Water, NaHCO₃) | I |
| 1B | Properties of acids & bases (HCl, NaOH) with litmus, zinc, sodium carbonate | I |
| 2 | Types of reactions—combination, decomposition, displacement, double displacement | I |
| 3 | Action of Zn, Fe, Cu, Al on salt solutions; arrange in reactivity order | I |
| 8 | Properties of acetic acid (odour, solubility, litmus, reaction with NaHCO₃) | I |
| 9 | Comparative cleaning capacity of soap in soft & hard water | I |
| 6 | Prepare temporary mount of leaf peel (stomata) | II |
| 7 | Show CO₂ is released during respiration | II |
| 12 | Study binary fission (Amoeba) & budding (Yeast, Hydra) using slides | II |
| 14 | Identify embryo parts of dicot seed (pea/gram/kidney bean) | II |
Experiments from Unit III & IV (Physics)
| Exp. No. | Practical Activity | Unit |
|---|---|---|
| 4 | Study dependence of V on I across resistor; find resistance; plot V-I graph | IV |
| 5 | Equivalent resistance of two resistors (series & parallel) | IV |
| 10 | Determine focal length of concave mirror & convex lens | III |
| 11 | Trace light through rectangular glass slab (∠i, ∠r, ∠e) | III |
| 13 | Trace path of light through glass prism | III |
CBSE Class 10 Science Marks Weightage
The CBSE Class 10 Science Syllabus 2025-26 includes 3 major subjects (chemistry, physics, and biology) and is divided into 5 units.
- The most important units with maximum mark weightage are Chemical Substances and World of Living. Both of these units carry 25 marks each.
The table below gives unit-wise mark weightage for the CBSE Class 10 Science Syllabus:
| 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: Important Topics
The following is a list of some important subject-by-subject areas from the CBSE Class 10 Science syllabus that you need to study:
| Subject | Important Topics |
|---|---|
| Chemistry | • Types of Chemical Reactions (all)• Refining of Metals• Reaction of Soap |
| Biology | • Double Circulation & Urine Formation• Monohybrid & Dihybrid Cross• Plant Hormones |
| Physics | • Concave Mirrors & Convex Lens Numericals• Refractive Index• Human Eye & Defects of Vision• Dispersion Through Prism• Applications of Atmospheric Refraction & Scattering of Light• Ohm’s Law (circuit questions)• Power Numericals• Joule’s Law of Heating• Properties of Magnetic Field Lines• Current through Solenoid & Straight Conductors (diagrams)• Domestic Electric Circuit• Color Coding of Wires• Short Circuit, Overloading & Earthing |
CBSE Class 10 Science Prescribed Books
The list of books the Board recommended for the CBSE class 10 science syllabus is shown in the following table:
| Sl. No. | Book Title | Publisher |
|---|---|---|
| 1 | Science – Textbook | NCERT |
| 2 | Assessment of Practical Skills in Science | CBSE |
| 3 | Laboratory Manual – Science | NCERT |
| 4 | Exemplar Problems | NCERT |
CBSE Class 10 Science Syllabus: NCERT Book PDF
The NCERT book is required for the CBSE class 10 science syllabus. Most of the questions in the final board exams are directly asked from the NCERT book.
Here are links to the chapter-by-chapter PDF of the CBSE Class 10 Science syllabus NCERT book.
| Chapters | NCERT Books |
|---|---|
| Chemical Reactions and Equations | Download PDF |
| Acids, Bases, and Salts | Download PDF |
| Metals and Non-Metals | Download PDF |
| Carbon and its Compounds | Download PDF |
| Life Processes | Download PDF |
| Control and Coordination | Download PDF |
| Reproduction | Download PDF |
| Heredity and Evolution | Download PDF |
| Light – Reflection and Refraction | Download PDF |
| Human Eye and the Colourful World | Download PDF |
| Electricity | Download PDF |
| Magnetic Effects of Electric Current | Download PDF |
| Our Environment | Download PDF |
CBSE Class 10 Science Syllabus: Previous Year Question Paper
Previous years' CBSE Class 10 Science syllabus question papers are listed in the table below. Students will benefit from knowing the most frequently asked questions on the CBSE Class 10 Science exam thanks to this:
| Year | Question Paper PDF Download |
|---|---|
| 2023 | CBSE Class 10 Science Question Paper Pdf |
| 2022 | CBSE Class 10 Science Question Paper Pdf |
| 2020 | CBSE Class 10 Science Question Paper Pdf |
| 2019 | CBSE Class 10 Science Question Paper Pdf |
| 2018 | CBSE Class 10 Science Question Paper Pdf |
| 2017 | CBSE Class 10 Science Question Paper Pdf |
Also Read
CBSE Class 10 Science Sample PaperCBSE Class 10 Science Exam Preparation Tips
To do well on the CBSE Class 10 Science syllabus, keep in mind that dedication, hard work, and strategic preparation are essential.
Here are some preparation tips for the CBSE Class 10 Science Exam 2024:
| Section | Preparation Tips |
|---|---|
| For Theory (Chemistry, Physics, Biology) |
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| Diagrams |
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| Numericals (Physics & Chemistry) |
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| Practicals |
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| Revision Strategy |
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FAQs
Ques. What is the syllabus of CBSE class 10th science?
Ans. The syllabus for CBSE class 10 science is given below:
| Unit No. | Unit | Key Topics |
|---|---|---|
| I | Chemical Substances | Reactions, Acids & Bases, Metals & Non-metals, Carbon compounds |
| II | World of Living | Life processes, Control & Coordination, Reproduction, Heredity & Evolution |
| III | Natural Phenomena | Light (Reflection, Refraction), Lenses & Mirrors, Human Eye, Dispersion |
| IV | Effects of Current | Electric current, Ohm’s law, Circuits, Heating & Magnetic effects |
| V | Natural Resources | Environment, Pollution |
Ques. How many chapters are in class 10 science?
Ans. There are 5 main units in Class 10 Science. Each unit covers multiple concepts, such as
- Chemical Reactions
- Metals and Non-metals
- Life Processes
- Control and Coordination
- Reflection and Refraction of light
- Electric Circuits
- Environmental Science
Ques. Who got 100% in CBSE?
Ans. Every year, several students achieve 100% marks in different subjects, including science. Exact names vary each year, and students who score full marks demonstrate strong command over NCERT concepts, numerical practice, and board-level questions.
Ques. What is the deleted portion of the class 10 science syllabus for 2025-26?
Ans. For the 2025-26 academic session, CBSE has continued the 30% syllabus reduction. The chapters completely removed are as follows:
- Periodic Classification of Elements
- Sources of Energy
- Management of Natural Resources.
These topics will not be part of the theory or practical exams, so students can focus on the remaining chapters.
Ques. Is the board removed from the 10th in the 2025 NCERT?
Ans. No, the Class 10 board exam is still conducted. The NCERT and CBSE have only reduced the syllabus to reduce student burden.
- Students are expected to appear for the board exam, which carries 80 marks for theory and 20 marks for internal assessment, totaling 100 marks.
- Passing requires a minimum of 33% in aggregate.
Ques. How to score 95 in class 10?
Ans. To score 95 in class 10, students must take the following tips:
- Revise NCERT thoroughly, make short notes, and focus on high-weightage chapters.
- Practice numericals and draw labeled diagrams neatly.
- Solve previous years’ papers and revise practical experiments.
- Manage exam time effectively and revise consistently, avoiding last-minute cramming.
*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.
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