CBSE Class 10 Deleted Syllabus 2025–26: The CBSE Class 10 syllabus for 2025–26 has been finalised for the 2026 board exams. Following the trend of previous years, the syllabus has been trimmed to reduce the exam load. Some topics have been removed, meaning they will not appear in the board exams, and students should be aware of these to focus on the important chapters.
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In Mathematics, certain construction methods and a few trigonometry topics have been deleted.
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For Science, chapters such as the Periodic Classification of Elements and some other sections are removed.
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In Social Science, parts of History, Geography, and Political Science have been omitted.
Knowing these deletions will help students plan their preparation effectively and focus on the chapters that matter for the CBSE Board Exam 2026.
CBSE Class 10 Deleted Syllabus 2025–26: Key Points
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No new deletions in the CBSE Class 10 2025–26 syllabus.
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Chapters deleted in previous years will continue to be excluded.
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Study only the latest NCERT textbooks and CBSE Class 10 syllabus PDF.
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Deleted topics, chapters, or activities will not be included in the 2026 board exams.
Deleted Syllabus of class 10 CBSE 2025-26 Maths
The deleted syllabus of Maths class 10 CBSE 2025-26 remains largely unchanged, with no major revisions. However, some topics have been excluded from the exam as per previous syllabus rationalisation. Students should focus only on the included chapters and avoid the deleted portions while preparing for the board exams.
| Deleted Syllabus of class 10 CBSE 2025-26 Maths | |
| Chapter | Deleted Topics / Portions |
| Real Numbers | Euclid’s division lemma; Decimal representation of rational numbers (terminating/non-terminating recurring decimals) |
| Polynomials | Simple problems on division algorithm for polynomials with real coefficients |
| Pair of Linear Equations in Two Variables | Problems reducible to linear equations |
| Quadratic Equations | No deletion |
| Arithmetic Progressions | No deletion |
| Coordinate Geometry | Area of a triangle |
| Triangles | Proofs of the following excluded: • Perpendicular from vertex to hypotenuse and similarity of triangles • Ratio of areas of similar triangles • Pythagoras theorem •Converse of Pythagoras theorem |
| 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 & Volumes | Frustum of a cone; Problems converting one solid into another (max 2 solids) |
| Statistics | Step-deviation method for mean; Cumulative frequency graph |
| Probability | No deletion |
SST Deleted Syllabus Class 10 CBSE 2025-26
Certain chapters and topics in History, Geography, Economics, and Political Science have been removed from the Class 10 Social Science syllabus. Students should focus only on the retained portions for the 2026 board exams.
| SST Deleted Syllabus Class 10 CBSE 2025-26 | |
| History (India and the Contemporary World–II) | |
| Chapter | Deleted Topics |
| All Chapters | No deletion |
| Geography (Contemporary India–II) | |
| Chapter | Deleted Topics |
| Resources and Development | Types of Resources |
| Forest and Wildlife | Biodiversity, Flora and Fauna in India, Vanishing Forests, Asiatic Cheetah, Himalayan Yew, Project Tiger |
| Agriculture | Impact of Globalisation on Agriculture |
| Manufacturing Industries | Industry Market Linkage, Cotton Textiles, Jute Textiles, Sugar Industry, Iron & Steel Industry, Cement Industry |
| Economics (Understanding Economic Development) | |
| Chapter | Deleted Topics |
| All Chapters | No deletion |
| Political Science (Democratic Politics–II) | |
| Chapter | Deleted Topics |
| Democracy and Diversity | Full chapter deleted |
| Gender, Religion and Caste | Selected images removed (pages 46, 48, 49) |
| Popular Struggles and Movements | Full chapter deleted |
| Challenges to Democracy | Full chapter deleted |
Science Deleted Syllabus Class 10 CBSE 2025-26
Some chapters and topics in Science have been removed as per the deleted syllabus of Class 10 CBSE 2025-26. Students should study only the remaining portions to prepare effectively for the 2026 board exams.
| Science Deleted Syllabus Class 10 CBSE 2025-26 | |
| Chapter Name | Deleted Topics / Portions |
| Periodic Classification of Elements | Full chapter removed. Topics excluded include: Need for classification, early attempts (Dobereiner’s Triads, Newland’s Law of Octaves, Mendeleev’s Periodic Table), Modern Periodic Table, gradation in properties, valency, atomic number, and metallic/non-metallic properties. |
| Heredity and Evolution | Selected topics removed: Basic concepts of evolution, evolution and classification, and the idea that evolution should not be equated with progress. |
| The Human Eye and the Colourful World | Excluded: Application of scattering to explain the color change of the Sun at sunrise and sunset. |
| Magnetic Effects of Current | Removed topics include: Electric motor, electromagnetic induction, induced potential difference, induced current, Fleming’s right-hand rule, and electric generator. |
| Sources of Energy | Full chapter deleted. Topics excluded: Different forms of energy, conventional and non-conventional energy sources (fossil fuels, solar, biogas, wind, water, tidal, nuclear), renewable vs. non-renewable energy. |
| Management of Natural Resources | This chapter will not be assessed in the board exam; only for internal assessment. Excluded topics: Conservation of resources, forests and wildlife, coal and petroleum conservation, people’s participation in resource management, advantages and limitations of big dams, water harvesting, and sustainable use of resources. |
English Deleted Syllabus Class 10 CBSE 2025-26
The CBSE deleted syllabus Class 10 2025–26 for English removes selected chapters, poems, prose, and grammar topics. Students should focus only on the remaining portions for effective board exam preparation.
| English Deleted Syllabus Class 10 CBSE 2025-26 | |
|---|---|
| Section | Deleted Content |
| Grammar | Use of passive voice, Noun clauses, Adverb clauses, Relative clauses, Prepositions |
| First Flight (Prose) | The Hundred Dresses – I, The Hundred Dresses – II |
| First Flight (Poem) | Animals |
| Footprints Without Feet (Prose) | The Hack Driver |
| Words and Expressions – II | Units 5 & 6 Deleted |
Hindi Deleted Syllabus Class 10 CBSE 2025-26
The Hindi deleted syllabus Class 10 CBSE 2025-26 includes selected chapters from Kshitij, Kritika, and Sparsh textbooks. Students should focus only on the retained portions for effective preparation for the 2026 board exams.
| Hindi Deleted Syllabus Class 10 CBSE 2025-26 | |
| Section | Deleted Chapters / Lessons |
| Hindi Course A | |
| Kshitij Part-II (Poetry) | देव सवैया, कवित (पूरा पाठ); गिरिजा कुमार माथुर – छाया मत छूना (पूरा पाठ); ऋतुराज – कन्यादान (पूरा पाठ) |
| Kshitij Part-II (Prose) | महावीर प्रसाद द्विवेदी – शिक्षा के विरोध कुतर्कों का खंडन (पूरा पाठ); सर्वेशवर दयाल सक्सेना – मानवीय करूणा की दिव्य चमक (पूरा पाठ) |
| Kritika Part-II | एही ठैया झुलनी हेरानी हो रामा! (पूरा पाठ); जार्ज पंचम की नाक (पूरा पाठ) |
| Hindi Course B | |
| Sparsh Part-II | बिहारी – दोहे; महादेवी वर्मा – मधुर-मधुर मेरे दीपक जल; अंतोन चेखव: गिरगिट |
| Sanchayan Part-II | No deletion |
Focus on the Updated Reduced Syllabus for Best Preparation
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Study only the latest reduced syllabus released by CBSE for Class 10 Board Exams 2026.
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Skip deleted chapters, exercises, and activities, as they will not appear in the exams.
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Always use the official CBSE syllabus PDF 2025–26 for reference.
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Follow the latest NCERT textbooks to ensure complete and accurate preparation.
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Focusing on the updated syllabus helps in efficient study and better exam performance.
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CBSE Class 10 Syllabus 2025-26 |
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| CBSE Class 10 Maths Syllabus | |