The CBSE Class 10 syllabus for the academic year 2025–26 remains unchanged from the previous year, with no topics removed or added. There have been no further reductions, and the Deleted Syllabus of Class 10 CBSE 2025-26 remains unchanged from 2024–25. Students are advised to refer to the official CBSE website for subject-wise details and to download the latest syllabus PDF for accurate guidance.
Core Subjects Included:
- Mathematics
- Science (comprising Physics, Chemistry, and Biology)
- Social Science (including History, Geography, Political Science, and Economics)
- English Language & Literature
- Hindi (Course A or B)
Optional Subjects:
- Computer Applications
- Sanskrit
- Other Regional or Foreign Languages (as offered by individual schools)
For the most reliable and up-to-date syllabus information, it is strongly recommended to visit the official CBSE website and access the detailed curriculum documents.
Deleted Syllabus Of Class 10 CBSE 2025-26 Maths
Check the deleted chapter-wise topics of Maths from the syllabus below:
| Chapter | Deleted Topics |
| REAL NUMBERS | Statement and simple problems on the division algorithm for polynomials with real coefficients. |
| POLYNOMIALS | Proof of the following theorems are deleted l If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse, the triangles on each side of the perpendicular are similar to the whole triangle and to each other.l The ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides.l In a right triangle, the square on the hypotenuse is equal to the sum of the squares on the other two sides.l In a triangle, if the square on one side is equal to sum of the squares on the other two sides, the angles opposite to the first side is a right angle. |
| PAIR OF LINEAR EQUATIONS IN TWO VARIABLES | Simple problems on equations reducible to linear equations. |
| QUADRATIC EQUATIONS | No Deletion |
| ARITHMETIC PROGRESSIONS | No Deletion |
| COORDINATE GEOMETRY | Area of a triangle |
| TRIANGLES | Proof of the following theorems is deleted. If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse, the triangles on each side of the perpendicular are similar to the whole triangle and each other.l The ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides.l In a right triangle, the square on the hypotenuse is equal to the sum of the squares on the other two sides.l In a triangle, if the square on one side is equal to the sum of the squares on the other two sides, the angle opposite to the first side is a right angle. |
| CIRCLES | No Deletion |
| CONSTRUCTIONS | Full Chapter Deleted |
| INTRODUCTION TO TRIGONOMETRY | No Deletion |
| TRIGONOMETRIC IDENTITIES | Trigonometric ratios of complementary angles |
| HEIGHTS AND DISTANCES | No deletion |
| AREAS RELATED TO CIRCLES | No deletion |
| SURFACE AREAS AND VOLUMES | Step Deviation Method for finding the mean, the the Cumulative Frequency graph |
| STATISTICS | Step Deviation Method for finding the mean, the Cumulative Frequency graph |
| PROBABILITY | No deletion |
Deleted Syllabus Of Class 10 CBSE 2025-26 SST
Check the deleted chapter-wise topics of Social Science from the syllabus below:
| Chapter | Deleted Topics |
| UNIT 1: India and the Contemporary World II (History) | |
| No Deletion | |
| UNIT 2: Contemporary India – II (Geography) | |
| Chapter – Resources and Development | Types of Resources. |
| Chapter – Forest and Wildlife | Impact of Globalisation on Agriculture |
| Chapter – Agriculture | Industry Market Linkage Cotton Textiles, Jute Textiles, Sugar Industry, Iron Steel Industry, Cement Industry |
| Chapter -Manufacturing Industries | The image on pages 46, 48, and 49 of Concert Textbook – Democratic Politics –II- reprinted edition 2020-2021) |
| Unit 4: Understanding Economic Development | |
| No Deletion | |
| Unit 3: Democratic Politics – II | |
| Chapter – Democracy and Diversity | Full Chapter Deleted |
| Chapter – Gender, Religion, and Caste | The image on pages 46, 48, and 49 of concert Textbook – Democratic Politics –II- reprinted edition 2020-2021) |
| Chapter – Popular Struggles and Movements | Full Chapter Deleted |
| Chapter – Challenges to Democracy | Full Chapter Deleted |
Deleted Syllabus Of Class 10 CBSE 2025-26 Science
Check the deleted chapter-wise topics of Science from the syllabus below:
| Chapter Name | Deleted Topics |
| Periodic Classification | Full Chapter Deleted |
| Heredity and Evolution | Application of scattering in explaining colour change of the sun at sunrise and sunset |
| The Human Eye and the Colourful World | This chapter will not be assessed in the year-end examination. It needs to be prepared only for the Internal Assessment. |
| Magnetic Effects of Current | Electric Motor, Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule, Electric Generator, |
| Sources of Energy | Full Chapter Deleted |
| Management of Natural Resources | Application of scattering in explaining the colour change of the sun at sunrise and sunset |
Deleted Syllabus Of Class 10 CBSE 2025-26 English
Check the deleted chapter-wise topics of English from the syllabus below:
| Section | Deleted Topics |
| Grammar | Use of passive voice, Clauses:Noun clauses, Adverb clauses, Relative clauses, Preposition |
| First Flight | Prose: The Hundred Dresses – I The Hundred Dresses – II |
| Poetry: Animals | |
| Footprints without Feet | The Hack Driver |
Deleted Syllabus Of Class 10 CBSE 2025-26 Hindi Course A
Check the deleted chapter-wise topics of Hindi Course A from the syllabus below:
Deleted Syllabus Of Class 10 CBSE 2025-26 Hindi Course B
Check the deleted chapter-wise topics of Hindi Course B from the syllabus below:
FAQ
What are the uses of the deleted syllabus of class 10 CBSE 2023-24?
According to the Central Board of Secondary Education (CBSE), the deleted syllabus of Class 10 CBSE 2023-24 is for the convenience of the students. Students can easily cover the remaining parts of the syllabus and will be able to score good marks.
Will the deleted topics from the syllabus affect the overall understanding of the subject?
Yes, because the deleted topics can affect the depth and breadth of understanding.
How should students prepare for the board exams if certain portions of the syllabus have been deleted?
Focus on the remaining syllabus completely, practice previous papers, and get clarification on concepts.
Read Also: Latest Syllabus of Class 10 CBSE 2023-24 Free Pdf
Conclusion:
With this subject-wise deleted Syllabus of Class 10 CBSE 2025-26, we wish all the students the very best of luck in their academic pursuits. It is important to note that the syllabus is subject to periodic updates and changes, and students should stay informed and up-to-date with any revisions. By following the deleted Syllabus of Class 10 CBSE 2025-26, students can focus on the remaining syllabus completely.