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

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• Updated on 15 Oct, 2025, 4:43 AM, by KollegeApply

The CBSE Class 10 deleted syllabus 2025-26 outlines topics and chapters removed from the Maths, Science, Social Science, English, and Hindi curriculum for the upcoming Board Exam 2026. These deletions, based on CBSE and NCERT updates, aim to reduce the academic burden and allow students to focus on essential topics.

Although no new deletions were introduced for 2025-26, previous syllabus reductions will continue to apply. Students referring to older NCERT or reference books must carefully skip these unprescribed sections to avoid studying unnecessary content.

Deleted Syllabus of Class 10 Maths

Skipping deleted chapters will allow students to devote more time to topics that are tested in Board Exam 2026.

Chapter	Deleted Topics
Real Numbers	Euclid’s Division Lemma; Decimal representation of rational numbers (terminating/non-terminating recurring)
Polynomials	Division algorithm and its applications
Pair of Linear Equations	Graphical method; Cross-multiplication; Reducible forms
Quadratic Equations	Completing the square method
Triangles	Areas of similar triangles; Pythagoras theorem
Coordinate Geometry	Area of a triangle
Trigonometry	Trigonometric ratios of complementary angles
Constructions	Entire chapter deleted
Surface Areas & Volumes	Frustum of a cone; Solid conversions
Statistics & Probability	Cumulative frequency graph; Optional probability exercise

Deleted Syllabus of Class 10 Science

Only one full chapter is removed to simplify preparation:

Chapter	Deleted Topics
Periodic Classification of Elements	Entire chapter removed

Deleted Syllabus of Class 10 Social Science (SST)

Certain subtopics, mainly from Geography, are removed to make the syllabus more manageable:

Unit / Chapter	Deleted Topics
Forest & Wildlife Resources	Biodiversity; Asiatic Cheetah; Himalayan Yew; Vanishing forests; Project Tiger
Agriculture	Impact of globalisation on agriculture
Manufacturing Industries	Cotton, jute, sugar, iron & steel, and cement industries

Deleted Syllabus of Class 10 English

Grammar, prose, poetry, and supplementary reader sections have selective deletions:

Section	Deleted Topics / Chapters
Grammar	Use of passive voice; Clauses – noun, adverb, relative; Prepositions
First Flight – Prose	The Hundred Dresses – I; The Hundred Dresses – II
First Flight – Poetry	Animals
Footprints without Feet	The Hack Driver

Deleted Syllabus of Class 10 Hindi

Several poems, prose, and supplementary texts are removed to reduce academic load:

Section	Deleted Topics / Chapters
काव्य खंड (Poetry Section)	देव; सवैय्या; कविता; छाया मत छूना; कन्यादान
गद्य खंड (Prose Section)	स्त्री शिक्षा के विरोधी कुतर्कों का खंडन; मानवीय करुणा की दिव्य चमक
कृतिका भाग-2 (Supplementary)	हीठया; झुलिया हिरानी ओरामा; जॉर्ज पंचम की नाक

Students must refer to this subject-wise deleted syllabus to focus on essential topics and avoid unnecessary preparation. This will help in effective revision and a stronger performance in CBSE Class 10 Board Exam 2026.

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