CBSE Class 10 Deleted Syllabus 2025-26 Subject Wise Deleted Syllabus

 CBSE Class 10 Deleted Syllabus 2025: The Central Board of Secondary Education (CBSE) has reduced the syllabus for Class 10 board exams to ease the academic burden on students. Several chapters and topics from subjects like Mathematics, Science, Social Science, English, and Hindi have been removed. This revision aims to promote conceptual learning and provide students with more time to focus on core topics. It is essential for students to be aware of these changes to streamline their preparation and avoid studying unnecessary content. Staying updated with the latest syllabus will help them perform effectively in the upcoming board exams.

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CBSE Class 10 Deleted Syllabus 2025-26

Subject Wise Deleted Syllabus of Class 10 CBSE 2025-26

Science Deleted Syllabus

Chapter-wise Deletions:

Periodic Classification of Elements (Full Chapter)

• Topics: Classification needs, early classification attempts, Modern Periodic Table, gradation in properties, valency, atomic numbers, metallic and non-metallic properties.

Heredity and Evolution

• Topics: Basic concepts of evolution, evolution and classification, evolution vs. progress.

The Human Eye and the Colourful World

• Topics: Application of scattering for color change of the sun at sunrise and sunset.

Magnetic Effects of Current

• Topics: Electric Motor, Electromagnetic Induction, Fleming’s Right Hand Rule, Electric Generator.

Sources of Energy (Full Chapter)

• Topics: Conventional and non-conventional energy sources, renewable vs. non-renewable energy.

Management of Natural Resources

• Note : This chapter is for internal assessment only and will not be included in the final exam.

Deleted Exercises from NCERT Class 10 Science Book:

• Chapter 5 : Entire chapter on "Periodic Classification of Elements"
• Chapter 9 : Topics on evolution, Darwin’s contributions, fossil formation, speciation, and human evolution.
• Chapter 11 : Visual system impairments, reasons for two eyes, color of the sun at different times.
• Chapter 12 : 'Flow' of charges.
• Chapter 13 : Michael Faraday, electric motor, electromagnetic induction, electric generator.
• Chapter 14 : Entire chapter on "Sources of Energy"
• Chapter 16 : Entire chapter on "Sustainable Management of Natural Resources"

English Deleted Syllabus

Deleted Topics in English Language and Literature:

Grammar

• Use of passive voice
• Noun, adverb, and relative clauses
• Prepositions

Creative Writing

• Analytical paragraph based on maps, charts, graphs, or cues.

Literature: First Flight Book

• Prose: The Hundred Dresses – I and II
• Poetry: Animals

Literature: Footprints without Feet Book

• The Hack Driver

Modifications in Section Structure (Comparing Old vs. New):

Section A (Reading Comprehension)

• Discursive passage (400-450 words) and case-based passage (with visual input).

Section B (Writing)

• Formal letter (5 marks) and analytical paragraph writing (5 marks).

Section C (Reference to Context)

• Extracts from prose/poetry, comprehension, and interpretation questions.

Mathematics Deleted Syllabus

Real Numbers

• Euclid’s division lemma, decimal representation of rational numbers.

Polynomials

• Division algorithm for polynomials.

Coordinate Geometry

• Area of a triangle.

Triangles

• Proof of theorems on similar triangles and Pythagoras theorem.

Constructions

• Full chapter deleted.

Trigonometric Identities

• Ratios of complementary angles.

Surface Areas and Volumes

• Frustum of a cone, mixed problems with two different solids.

Statistics

• Step deviation method for finding the mean, cumulative frequency graph.

Deleted Exercises from NCERT Class 10 Maths Book:

• Chapter 1 (Real Numbers) : Euclid’s division lemma, decimal expansions.
• Chapter 2 (Polynomials) : Division algorithm.
• Chapter 3 (Pair of Linear Equations) : Graphical solutions and cross-multiplication.
• Chapter 6 (Triangles) : Areas of similar triangles, Pythagoras theorem.
• Chapter 7 (Coordinate Geometry) : Area of a triangle.

Preparation Tips for Class 10 Students

• Go through the latest syllabus and make a note of the chapters and topics included in each subject.
• Be aware of the exam pattern, marking scheme, and any recent changes. CBSE's blueprint can help you focus on high-weightage topics.

• Divide your study hours into different slots for each subject.
• Allocate more time to subjects you find challenging, but also review stronger subjects regularly.
• Set daily, weekly, and monthly goals to track your progress.

• NCERT textbooks are the primary study material for CBSE exams. Cover all chapters and exercises from the NCERT books thoroughly.
• Go through solved examples and exercise questions carefully, as similar types of questions often appear in exams.

• Create concise notes, mind maps, and summaries for each chapter. Highlight key formulas, concepts, and important points.
• Use colored pens or markers to differentiate sections, making it easier to revise quickly.

• Solve sample papers, previous years' question papers, and CBSE-issued question banks.
• Practice under timed conditions to improve speed and accuracy.
• Analyze your answers after solving each paper to identify and work on weak areas.

• Pay special attention to topics that carry higher weightage, as indicated in the syllabus or sample papers.
• Memorize key formulas, derivations, and theorems in subjects like Math and Science, and practice applying them in various problems.

• Practice writing answers clearly and concisely. Avoid overwriting or unnecessary details.
• Underline key points and maintain neat handwriting to make your answers more readable.
• Work on your writing speed to ensure you can complete the paper within the allotted time.

• Set a specific time limit for each section while practicing papers.
• Learn to quickly scan questions and prioritize easier or high-scoring questions first.

• Don’t hesitate to reach out to teachers, friends, or online resources to clear any doubts immediately.
• Use educational platforms, videos, and tutorials for additional explanations if needed.

• Avoid long, uninterrupted study sessions. Take short breaks to refresh your mind and prevent fatigue.
• Use the Pomodoro technique or similar methods to balance study and rest periods effectively.

• Eat balanced meals, get enough sleep, and stay hydrated.
• Regular physical activity or a few minutes of meditation can help reduce stress and keep you energized.

• Set aside time each day for revision, even if it’s just to quickly review formulas or key points.
• As exams approach, focus more on revision than learning new topics to strengthen your existing knowledge.

• CBSE often includes HOTS questions to test conceptual understanding. Practice these regularly to enhance analytical skills.
• Focus on conceptual clarity, especially in Science and Math, to answer HOTS questions effectively.

• Maintain a positive mindset and believe in your ability to succeed.
• Keep track of your progress and celebrate small achievements, which can boost your confidence.