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Deleted Syllabus of Class 10 CBSE 2025-26: All Subject Wise Deleted Topics
Deleted Syllabus of Class 10 CBSE 2025-26 - The CBSE 10th 2026 syllabus remains unchanged, requiring students to study the full syllabus. The CBSE 10th date sheet for 2026 has been released on October 24, 2025, allowing students to plan their study schedule accordingly. The CBSE 10th exams will be conducted from February 17 to March 10, 2026. Unlike the 2020-21 academic year, when the board reduced the syllabus due to pandemic-related disruptions, the current syllabus demands thorough preparation across all subjects. The revised CBSE Class 10 exam syllabus for the year 2025-26 has been made available on the official website, cbseacademic.nic.in. This year, the board will be conducting the CBSE 10th exams with the complete syllabus.
Since the CBSE Class 10 Syllabus was reduced, students had to study less material as compared to current year, as well as the chapter-wise weighting and mark distribution for Class 10 CBSE has been adjusted. When referring to previous years' question papers of CBSE, students must be attentive to the excluded syllabus to avoid any confusion.
This article presents the subject-wise omitted syllabus for CBSE Class 10, relevant to the academic session 2025-26. By going through the CBSE Class 10 Deleted Syllabus, students can identify the chapters and topics that are no longer part of the CBSE Class 10 syllabus. Read further to know about the deleted syllabus of CBSE Class 10, benefits and other relevant information.
Subject-wise Deleted Syllabus of CBSE Class 10 for 2025-26
The revised Central Board of Secondary Education (CBSE) Class 10 syllabus has been streamlined to lighten students’ workload and to place a stronger emphasis on practical learning via subject-enrichment activities. These changes not only help reduce unnecessary content during board exam preparation but also aim to foster better outcomes in board results. Below, students will find a subject-wise overview of the reduced syllabus (deleted topics).
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Check NowDeleted Syllabus of CBSE Class 10 Mathematics
Mathematics is a subject known for its scoring potential, but it can also be time-consuming. With a reduced syllabus, students can concentrate and allocate more time to the current topics in the revised CBSE syllabus. Compared to the previous year's Math syllabus, the latest syllabus for 2025-26 remains unchanged. However, there might be slight adjustments in the marking scheme and CBSE Class 10 exam pattern. Students are advised to refer to the recent CBSE Class 10 Mathematics syllabus. for any such modifications.
To gain a clearer comprehension of the omitted topics of the CBSE Class 10 mathematics syllabus in the academic year 2020-21, refer to the table below.
CHAPTER | TOPICS REMOVED |
Unit I-Number Systems | |
Real Numbers | · Representation of terminating / non-terminating recurring decimals on the number line through successive magnification. · Explaining that every real number is represented by a unique point on the number line and conversely, viz. every point on the number line represents a unique real number. · Definition of nth root of a real number. |
Unit II-Algebra | |
Polynomials | · Motivate and State the Remainder Theorem with examples. Statement and proof of the Factor Theorem. · x3+y3+z3-3xyz |
Linear Equations In Two Variables | · Examples, problems on Ratio and Proportion |
Unit III-Coordinate Geometry | |
Coordinate Geometry | No deletion |
Unit IV-Geometry | |
Introduction To Euclid's Geometry | Delete the Chapter |
Lines And Angles | No deletion |
Triangles | · Proof of the theorem deleted- Two triangles are congruent if any two angles and the included side of one triangle is equal to any two angles and the included side of the other triangle (ASA Congruence). · Topic Deleted-Triangle inequalities and relation between ‘angle and facing side' inequalities in triangles |
Quadrilaterals | No deletion |
Area | Delete the Chapter |
Circles | · There is one and only one circle passing through three given non-collinear points. · If a line segment joining two points subtends equal angle at two other points lying on the same side of the line containing the segment, the four points lie on a circle. |
Constructions | · Construction of a triangle of given perimeter and base angles |
Unit V-Mensuration | |
Areas | · Application of Heron’s Formula in finding the area of a quadrilateral. |
Surface Areas And Volumes | No deletion |
Unit VI-Statistics & Probability | |
Statistics | · Histograms (with varying base lengths), · Frequency polygons. · Mean, median and mode of ungrouped data. |
Probability | No deletion |
CBSE Class 10 Science Deleted Syllabus
In many boards, including CBSE, Class 10 Science carries a substantial weightage in the calculation of the overall marks. Doing well in this subject can significantly impact the final results. The reduced syllabus allows students ample time to concentrate on individual topics and allocate more time for thorough revision. Unlike the previous year, the Science syllabus for 2025-26 remains unaltered. However, there could be slight adjustments in the marking scheme and exam pattern. Students should refer to the recent CBSE Class 10 Science syllabus for updates.
The table below provides detailed information about the deleted syllabus of CBSE class 10 Science Theory for 2020-21
Unit name | Deleted Portion (Theory) |
Chemical Substances - Nature and Behaviour | o Metals and Non-metals: Basic Metallurgical processes; Corrosion and its prevention o Carbon and its Compounds: Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydrocarbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents. |
World of Living | o Control and coordination in animals and plants: Tropic movements in plants; Introduction of plant hormones; Control and coordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical coordination: animal hormones. o Heredity and Evolution:Basic concepts of evolution. |
Natural Phenomena | o The Human Eye and the Colourful World: Functioning of a lens inHuman eye, defects of vision and their corrections, applications of spherical mirrors and lenses. |
Effects of Current | o Magnetic Effects of Electric Current: Electric Generator, Direct current. Alternating current: frequency of AC. Advantage of AC over DC. Domestic electric circuits. |
Natural Resources | o Sources of energy: Different forms of energy, conventional and non- conventional sources of energy: Fossil fuels, solar energy; biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of Energy. |
Deleted Syllabus of CBSE Class 10 Social Science
Social Science encompasses various disciplines like History, Geography, Political Science, and Economics and has a vast curriculum. A lighter syllabus reduces the stress associated with covering a vast curriculum, leading to a more relaxed study environment. Though the SocialScience syllabus 2025-26 remains unchanged from the previous year still CBSE Board may have incorporated a few changes in the examination pattern or marking scheme in the current academic session.. To confirm the same students can refer to the CBSE Class 10 Social Science Syllabus.
Below, we have mentioned the detailed CBSE Class 10 Social Science syllabus deletions for History, Political Science, and Geography which were implemented in the academic session 2020-21
S. No. | Chapter No. and Chapter Name (NCERT Textbook) | Recommended Portion for deletion |
UNIT 1: INDIA AND THE CONTEMPORARY WORLD –II (HISTORY) | ||
1. | Section 2 : Livelihoods, Economies and Societies NOTE- ANY ONE OUT OF THESE TWO CHAPTERS (CH-3/CH4) Chapter 3: The Making of a Global World Chapter 4: The Age of Industrialisation | The chosen Chapter to be assessed in the Periodic Tests and not in Board Examination. |
2. | Section 3: Everyday Life, Culture and Politics Chapter 5: Print Culture and the Modern World | Complete Chapter |
UNIT 2: CONTEMPORARY INDIA – II (GEOGRAPHY) | ||
3 | Chapter 2: Forest and Wildlife | Complete Chapter |
4 | Chapter 3: Water Resources | Complete Chapter except for Map Items which will be assessed in the Examination |
5 | Chapter 5: Mineral and Energy Resources | Complete Chapter except for Map Items which will be assessed in the Examination |
UNIT 3: DEMOCRATIC POLITICS –II (POLITICAL SCIENCE) | ||
6 | Chapter 3: Democracy and Diversity | Complete Chapter |
7 | Chapter 4: Gender, Religion and Caste | Complete Chapter |
8 | Chapter 5: Popular Struggles and Movements | Complete Chapter |
9 | Chapter 8: Challenges to Democracy | Complete Chapter |
CBSE Class 10 English Deleted Syllabus
English examinations in Class 10 are structured around various sections, including reading comprehension, writing skills, grammar and literature. With a CBSE Class 10 English deleted syllabus, students can emphasise core concepts, and master the skills; creative writing and independent reading are also feasible beyond class 10 syllabus. The most recent syllabus release shows no differences compared to the previous year. However, students should review the CBSE Class 10 English exam marking scheme and exam pattern, as slight alterations might occur. They can also verify these details by referring to the CBSE Class 10 English Syllabus.
Below, students will find detailed information about the topics that have been deleted from the English curriculum in 2020-21:
Unit | Chapters |
Literature First Flight | 1. How to Tell Wild Animals 2. Trees 3. Fog 4. Mijbil the Otter 5. For Anne Gregory |
Footprints Without Feet | 1. The Midnight Visitor 2. A Question of Trust 3. The Book That Saved The Earth |
Deleted Syllabus of CBSE Class 10 Hindi
Due to the CBSE Class 10 Hindi deleted syllabus, students could potentially allocate more time to explore supplementary materials, engage in self-directed study, and cultivate a more profound interest in the subject. The CBSE board has retained the Class 10 Hindi syllabus for 2025-26, similar to the previous year. To ensure no modifications have been made in the marking scheme and exam pattern, students should consult the recent CBSE Class 10 Hindi Syllabus.
What are the Benefits of the Deleted Syllabus of CBSE Class 10?
Understanding why referring to the CBSE Class 10 deleted syllabus is highly important and advantageous for students.
CBSE Board Exams would seem less stressful and anxious if students had less material to cover.
Due to the reduced topics, teachers can allocate more time to each topic, enabling students to grasp concepts more thoroughly.
Both teachers and students will be able to cover the CBSE Class 10 syllabus more efficiently, allowing ample time for revision. This can contribute to achieving higher scores in the Class 10 CBSE results.
In addition to helping students focus on the core concepts, the deleted syllabus can help rid them of some of the less essential topics
There would be more time for students to discover their interests and develop their learning styles.
For students who are struggling academically, the syllabus will be more manageable.
The revised CBSE Syllabus for Class 10 not only alleviates student workload but also encourages practical learning via diverse subject enrichment activities.
Check CBSE Subject-Wise Detailed Syllabus Links:
Frequently Asked Questions (FAQs)
Q: What are the minimum passing marks for the CBSE Class 10 Science exam 2026?
A:
Students must achieve at least 33% marks in both theory and practical exams to pass the CBSE 10th Science exam.
Q: Are the latest CBSE Class 10 Syllabus 2025-26 available on the official website?
A:
Yes, the latest CBSE Syllabus 2025-26 for Class 10 can be downloaded from the official website, cbseacademic.nic.in.
Q: What are the best books for the CBSE Class 10 Board Exams?
A:
The NCERT Books are the best for the class 10 CBSE board exams preparation.
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The ALLEN Scholarship Admission Test (ASAT) 2026 Class 7 to 8 papers generally range from moderate to tough.
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Dear Student,
Here is your CBSE Class 10 Science (Hindi Medium) Sample Paper with Solution 2025-26
Hi Akshat!
We have provided below the link to access CBSE Board Class 10th question papers:
https://school.careers360.com/boards/cbse/cbse-class-10-question-paper-2026
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