CBSE Class 10 Science Deleted Syllabus 2025-26 is provided in the article below. CBSE has maintained the 30% reduction in the syllabus for the academic year 2025-26 Students can download the updated CBSE Class 10 Science Syllabus from the official website cbseacademic.nic.in.
- CBSE Class 10 Science Syllabus now contains a total of 13 chapters
- A total of 3 chapters and some portions of the other 4 chapters were deleted.
- Entire chapters of Sources of Energy, Periodic Classification of Elements, and Sustainable Management of Natural Resources have been removed as a part of the class 10th science deleted syllabus 2025-26
- A significant portion of Chapter 9 of the syllabus is also deleted, with the title of the chapter replaced with 'Heredity'.
- Sections of Chapter 11, Chapter 12, and Chapter 13 have also been deleted.
The total marks for CBSE Class 10 Science theory exam is 80 and rest 20 marks are allotted to the internal assessment. To pass the exam, students need to score a cumulative of at least 33% in both the theory and practical.
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Table of Contents |
CBSE Class 10 Science Deleted Syllabus 2025-26
Chapter-wise topics removed from CBSE Class 10 Science Syllabus 2025-26 have been tabulated below:
| Chapter Name | Page No. {refer NCERT} | Topics Deleted |
|---|---|---|
| Chapter 5: Periodic Classification of Elements | 79-92 | Full Chapter Deleted |
| Chapter 9: Heredity and Evolution | 147-158 | 4 Box items:
9.3 Evolution
9.4 Speciation 9.5 Evolution and Classification
9.6 Evolution should not be equated with ‘progress’
|
| Chapter 11: The Human Eye and the Colourful World | 188, 189, 196 and 197 | Two box items:
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 Deleted |
| Chapter: 16 Sustainable Management of Natural Resources | 266–280 | Full Chapter Deleted |
Check CBSE Class 10 Subject-Wise Syllabus 2025-26
Why CBSE Class 10 Science Deleted Syllabus 2025-26?
CBSE Syllabus has been ever changing to give the students a balanced development. Science fosters the development of students’ skills and based on that the board has created a syllabus that helps students improve their development.
A few things have been taken into account for class 10 Science deleted syllabus 2025-26 as follows:
- Re-evaluating the CBSE Class 10 Science paper’s level of difficulty.
- The goal of the authorities is to support self-learning in which students are not forced to rely on outside assistance, as they were under the previous syllabus that included the science class 10 deleted syllabus 2025-26.
- The out-of-date material in the Class 10 Science Deleted Syllabus 2025-26 is unrelated to the current situation.
- With the revised syllabus and providing the list of class 10 Science deleted syllabus 2025-26, the CBSE Board hopes to focus on more general topics.
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CBSE Class 10 Science Marking Scheme
The Class 10 Science exam is for 100 marks, which is split as follows:
- 80 marks for theory
- 20 marks for internal assessment
The theory paper pattern for science is as follows:
| Section | Question Type | No. of Questions | Marks |
|---|---|---|---|
| Section A | MCQs (1 mark each) | 20 | Twenty (20) |
| Section B | Short Answer Type – I (2 marks) | 6 | Twelve (12) |
| Section C | Short Answer Type – II (3 marks) | 7 | Twenty-one (21) |
| Section D | Long Answer Type (5 marks) | 3 | Fifteen (15) |
| Section E | Competency-Based Questions (4 marks) | 3 | Twelve (12) |
| Total | 39 Questions | 80 Marks |
Unit-wise Weightage – Syllabus of Class 10th Science
Below is the unit-wise marks distribution as per the latest CBSE Class 10 Board Syllabus. This tells you how much each unit is worth in the board exam:
| Unit | Chapters | Marks |
|---|---|---|
| 1 | Chemical Substances – Nature and Behaviour (Chemical Reactions, Acids & Bases, Metals, Carbon Compounds) | Twenty-five (25) |
| 2 | World of Living (Life Processes, Reproduction, Control & Coordination, Heredity & Evolution) | Twenty-five (25) |
| 3 | Natural Phenomena (Light & Human Eye) | Twelve (12) |
| 4 | Effects of Current (Electricity, Magnetic Effects) | Thirteen (13) |
| 5 | Natural Resources (Our Environment) | Five (5) |
| Total | Eighty (80) |
CBSE Class 10th Board Chapter-wise Weightage
This is the most helpful part of your preparation. The table below shows how many 1-mark, 2-mark, 3-mark, 4-mark, and 5-mark questions are expected from each chapter in Science:
| Chapter Name | 1 Marks | 2 Marks | 3 Marks | 5 Marks | 4 Marks | Total Marks |
|---|---|---|---|---|---|---|
| Chemical Reactions and Equations | Three | nil | One | nil | nil | Six (6) |
| Acids, Bases, and Salts | Three | nil | nil | nil | nil | Three (3) |
| Metals and Non-metals | One | One | One | nil | One | Ten (10) |
| Carbon and Its Compounds | One | nil | nil | One | nil | Six (6) |
| Periodic Classification of Elements | Deleted | |||||
| Life Processes | Two | Two | One | nil | nil | Nine (9) |
| Control and Coordination | One | One | nil | nil | nil | Three (3) |
| How do Organisms Reproduce? | One | nil | nil | One | nil | Six (6) |
| Heredity and Evolution | Three | nil | nil | nil | One | Seven (7) |
| Light – Reflection and Refraction | nil | nil | Two | nil | One | Ten (10) |
| The Human Eye and the Colourful World | nil | One | nil | nil | nil | Two (2) |
| Electricity | Two | nil | nil | One | nil | Seven (7) |
| Magnetic Effects of Electric Current | Three | nil | One | nil | nil | Six (6) |
| Our Environment | nil | One | One | nil | nil | Five (5) |
| Total | Twenty (20) | Six (6) | Seven (7) | Three (3) | Three (3) | Eighty (80) |
CBSE Class 10 Science Question Paper Pattern 2025-26
The question paper pattern of CBSE Class 10 Science is tabulated below:
| Sections | No. of Questions | Total Marks |
|---|---|---|
| Multiple-Choice-Questions (MCQs) | 20 | 20 × 1 = 20 |
| Short-Answer-Type Questions I | 6 | 6 × 2 = 12 |
| Short-Answer-Type Questions II | 7 | 7 × 3 = 21 |
| Long-Answer-Type Questions | 3 | 5 × 3 = 15 |
| Competency-Based Questions | 3 | 4 × 3 = 12 |
| Total (Theory) | 39 | 80 |
| Internal Assessment | - | 20 [Periodic Assessment - 05 marks + 05 marks Practical Work - 05 marks Portfolio - 05 marks] |
Check CBSE Class 10 Date Sheet
CBSE Class 10 Science Previous Years Papers
Students can download previous years’ question papers for CBSE Class 10 Science from the links below:
| Year | Previous Year Question Papers |
|---|---|
| 2025 | CBSE Class 10 Science Question Paper |
| 2024 | CBSE Class 10 Science Question Paper |
| 2023 | CBSE Class 10 Science Question Paper |
| 2022 | CBSE Class 10 Science Question Paper |
| 2021 | Exams Cancelled |
| 2020 | CBSE Class 10 Science Question Paper |
Check CBSE Class 10 Science Notes
Frequently Asked Questions
Ques. How many chapters are there in CBSE Class 10 Science Syllabus 2025-26?
Ans. Students have to study a total of 13 chapters as per the latest CBSE Class 10 Science Syllabus 2025-26 The detailed syllabus is available on the official website cbseacademic.nic.in.
Ques. What are the topics included in chapter Metals and Non-Metals of CBSE Class 10 Science?
Ans. The following are the topics covered in the Chapter Metals and Non-Metals of CBSE Class 10 Science Syllabus:
- Definition of Metal and Non-Metal
- Physical properties of metals and non-metals
- Practice questions
- Chemical properties of metals
- Practice questions
- Corrosion
- Alloy
- Metallurgy
- Roasting
- Calcination
- Thermit reaction
Ques. How many units are there in CBSE Class 10 Science Syllabus 2025-26?
Ans. There are five units in CBSE Class 10 Science Syllabus 2025-26 - World of Living, Chemical Substances (Nature and Behaviour), Natural Phenomena, Natural Resources, and Effects of Current.
Ques. Which units carry maximum marks weightage in CBSE Class 10 Science Syllabus 2025-26?
Ans. The units Chemical Substances and World of Living each carry 25 marks weightage for CBSE Class 10 Science exam. Students must prepare these two units first.
Ques. What is CBSE Class 10 Science Practical Syllabus from Unit II?
Ans. Students have to study the following in Unit 2 of CBSE Class 10 Science practical syllabus:
- Preparing a temporary mount of a leaf peel to show stomata.
- Experimentally show that carbon dioxide is given out during respiration.
- Studying (a) binary fission in Amoeba and (b) budding in yeast and Hydra with the help of prepared slides.
- Identification of the different parts of an embryo of a dicot seed (Peas, gram, or red kidney bean).
Ques. What are the passing marks for CBSE Class 10 Science?
Ans. Students must score at least 33% marks to pass CBSE Class 10 Science Exam 2026. The passing marks are collective for theory and internal assessment.
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