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CBSE Class 6-12 Rationalised Syllabus For Academic Year 2023-2024

Surface areas and volumes CBSE has recently released its secondary and senior secondary curriculum for the academic year 2023-24. As per the National Education Policy 2020, all boards have to reduce the content load and promote experiential learning among students. CBSE has incorporated this recommendation in its latest curriculum, reduced topics, and added various new concepts among different subjects.

Rationalisation of Content

The National Education Policy has emphasised the need to reduce the content load on students and promote opportunities for experiential learning with a creative mindset. The pandemic also makes it necessary to reduce the burden on students. Thus, NCERT has decided to rationalise its textbooks across all classes. The rationalisation also ensures the Learning Outcomes developed by NCERT are considered.

Reduction in Syllabus in 2023-24 CBSE Curriculum

The syllabus has been reduced by 25-30%. Instead of removing entire chapters, CBSE has chosen to remove non-essential parts. For CBSE classes 6 to 12, a few chapters have been deleted in the NCERT textbooks for the academic year 2023-2024. There have been some changes in TBS (exercise questions) due to chapter/topic deletion.

Overall changes with respect to the deletion of chapters and topics for CBSE 6 to 12 for this academic year 2023-2024 are listed below:

Below are subject-by-subject details regarding the deleted portion of the syllabus for academic year 2023-2024.

Maths – Deleted portion for academic year 2023-2024


Deleted Portion

CBSE Class 6 Maths

Knowing our Numbers

  • Estimating to the nearest hundreds by rounding off
  • Estimating to the nearest thousands by rounding off
  • Estimating outcomes of number situations
  • To estimate sum or difference
  • To estimate products
  • Using Brackets
  • Roman Numerals

 Whole Numbers

  • Properties of Whole Numbers
  • Patterns in Whole Numbers

 Playing with Numbers

  • Some More Divisibility Rules

 Basic Geometrical Ideas

  • Triangles
  • Quadrilaterals
  • Circles

 Understanding Elementary Shapes

  • Three Dimensional Shapes


  • Tenths
  • Hundredths

 Data Handling

  • Drawing a Pictograph
  • A Bar Graph
  • Interpretation of a Bar Graph
  • Drawing a bar graph


  • Use of Variables in Common Rules
  • Expressions with Variables
  • Using Expressions Practically
  • What is an Equation?
  • Solution of an Equation

Completely Deleted Chapters:


Practical Geometry

CBSE Class 7 Maths


  • Product of three or more Negative Integers
  • Making Multiplication Easier

Fractions and Decimals

  • How well have you learnt about fractions?
  • How well have you learnt about decimal numbers?

Data Handling 

  • Collecting data
  • Organisation of data
  • Chance and probability

Simple Equations 

  • From solution to equation

Lines and Angles 

  • Adjacent Angles
  • Linear Pair
  • Vertically Opposite Angles

Comparing Quantities 

  • Equivalent ratios

Perimeter and Area 

  • Squares and rectangles
  • Triangles as parts of rectangles
  • Generalising for other congruent parts of rectangles
  • Conversion of units

Algebraic Expressions 

  • Addition and subtraction of algebraic expressions
  • Using algebraic expressions – formulas and rules

Completely Deleted Chapters:

Congruence of Triangles

Practical Geometry


CBSE Class 8 Maths

Rational Numbers 

  • Negative of a number
  • Reciprocal
  • Representation of Rational Numbers on the
  • Number Line
  • Rational Numbers between Two Rational Numbers

Linear Equations in One Variable 

  • Solving Equations which have Linear Expressions on one Side and Numbers on the other Side.
  • Equations Reducible to the Linear Form

Understanding Quadrilaterals 

  • Polygons
  • Classification of polygons
  • Diagonals
  • Angle sum property

Data Handling 

  • Organising Data
  • Grouping Data
  • Bars with a difference

Squares and Square Roots 

  • Estimating Square Root

Cubes and Cube Roots 

  • Cube root of a cube number

Comparing Quantities 

  • Finding the Increase or Decrease Per cent.
  • Prices Related to Buying and Selling (Profit and Loss)
  • Rate Compounded Annually or Half Yearly (Semi Annually)

Algebraic Expressions and Identities 

  • What are Expressions?
  • Terms, Factors and Coefficients
  • Monomials, Binomials and Polynomials
  • Like and Unlike Terms
  • What is an Identity?
  • Standard Identities
  • Applying Identities


  • Area of Trapezium
  • Area of a General Quadrilateral


  • Find the Error

Introduction to Graphs 

  • A Bar graph
  • A Pie graph (or a circle-graph)
  • A histogram
  • Linear Graphs

Completely Deleted Chapters:

Practical Geometry

Visualising Solid Shapes

Playing with Numbers


CBSE Class 9 Maths

Number systems 

  • Representing real numbers on the number line


  • Remainder theorem

Coordinate geometry 

  • Plotting a point in the plane if its coordinates are given.

Linear equations in two variables 

  • Graph of a linear equation in two variables
  • Equations of lines parallel to the x-axis and y-axis

Introduction to Euclid’s geometry 

  • Equivalent versions of Euclid’s fifth postulate

Lines and angles 

  • Parallel lines and a transversal
  • Angle sum property of a triangle


  • Inequalities in a triangle


  • Angle sum property of a quadrilateral
  • Types of quadrilaterals
  • Another condition for a quadrilateral to be a parallelogram.


  • Circles and its related terms: a review
  • Circle through three points

Heron’s formula 

  • Application of heron’s formula in finding areas of quadrilaterals

Surface areas and volumes 

  • Surface area of a cuboid and a cube
  • Surface area of a right circular cylinder
  • Volume of a cuboid
  • Volume of a cylinder


  • Collection of data
  • Presentation of data
  • Measures of central tendency

Completely Deleted Chapters:

Areas of Parallelograms and Triangles



CBSE Class 10 Maths

Real Numbers

  • Euclid's Division Lemma
  • Revisiting Rational Numbers and Their Decimal Expansions


  • Division Algorithm for Polynomials

Pair of linear equations in two variables

  • Pair of Linear Equations in Two Variables
  • Cross-multiplication method
  • Equations Reducible to a Pair of Linear Equations in Two Variables

Quadratic Equations

  • Solution of a Quadratic Equation by Completing the Square


  • Areas of Similar Triangles
  • Pythagoras Theorem

Coordinate Geometry

  • Area of a Triangle

Introduction to Trigonometry

  • Trigonometric Ratios of Complementary Angles

Areas related to circles.

  • Perimeter and Area of a Circle — A Review
  • Areas of Combinations of Plane Figures

Chapter 13: Surface Areas and Volumes

  • Conversion of Solid from One Shape to Another
  • Frustum of a Cone

Chapter 14: Statistics

  • Graphical Representation of Cumulative Frequency Distribution

Completely Deleted Chapter4:


CBSE Class 11 Maths


  • Power set
  • Practical Problems on Union and Intersection of Two Sets

Trigonometric Functions

  • Trigonometric Equations

Complex Numbers and Quadratic Equations

  • Polar representation of a complex number
  • Quadratic Equations

Linear Inequalities

  • Graphical Solution of Linear Inequalities in Two Variables
  • Solution of System of Linear Inequalities in Two Variables

Binomial Theorem

  • General and Middle Terms

Sequences and series

  • Arithmetic Progression (A.P.)
  • Sum to n Terms of Special Series

Straight Lines

  • Collinearity of three points 
  • Normal form
  • General Equation of a Line

Conic Sections

  • Special cases of an ellipse 

Introduction to three-dimensional geometry

  • Section Formula


  • Analysis of Frequency Distributions


  • Random Experiments

Completely Deleted Chapter

Principle of Mathematical Induction

Mathematical Reasoning

CBSE Class 12 Maths

Relations and Functions

  • Binary Operations


  • Elementary Operation (Transformation) of a Matrix
  • Inverse of a matrix by elementary operations

Continuity and Differentiability

  • Mean Value Theorem

Applications of Derivatives

  • Tangents and Normals
  • Approximations


  • Geometrical interpretation of indefinite integral
  • Comparison between differentiation and integration
  • Definite integral as the limit of a sum

Applications of Integrals: 

  • The area of the region bounded by a curve and a line.
  • Area between Two Curves

Differential Equations: 

  • Formation of a Differential Equation whose General Solution is given.

Three-Dimensional Geometry: 

  • Relation between the direction cosines of a line
  • Equation of a line passing through two given points
  • Plane
  • Coplanarity of Two Lines
  • Angle between Two Plane
  • Distance of a Point from a Plane
  • Angle between a Line and a Plane

Linear Programming:

  • Different Types of Linear Programming Problems


  • Random Variables and its Probability Distributions
  • Bernoulli Trials and Binomial Distribution


Science (Physics, Chemistry and Biology) – Deleted portion for academic year 2023-2024


Deleted Portion

CBSE Class 6 Science

Completely Deleted Chapters:

  • Food: Where Does it Come From
  • Fibre to Fabric
  • Changes Around Us
  • Water
  • Garbage In, Garbage Out

CBSE Class 7 Science

Completely Deleted Chapters:

  • Fibre to Fabric
  • Weather, Climate and Adaptations of Animals to Climate
  • Winds, Storms and Cyclones
  • Soil
  • Water: A Precious Resource

CBSE Class 8 Science

Completely Deleted Chapters:

  • Synthetic Fibres and Plastics
  • Materials: Metals and Non-Metals
  • Cell- Structure and Functions
  • Stars and the Solar System
  • Pollution of Air and Water

CBSE Class 9 Science

Matter in Our Surroundings

  • Bose-Einstein Condensate

Is matter around us pure.

  • Separating the components of a mixture

Completely Deleted Chapters:

  • Diversity in Living Organisms
  • Why Do We Fall Ill
  • Natural Resources

CBSE Class 10 Science

Heredity and Evolution

  • Evolution
  • Evolution and classification
  • Evolution should not be equated with progress.

Magnetic effect of Electric current

  • Electric motor
  • Electromagnetic induction
  • Electric generator

The Human Eye and the colourful world

  • Colour of the Sun at Sunrise and Sunset

Completely Deleted Chapters:

  • Periodic Classification of Elements
  • Sources of Energy
  • Sustainable Management of Natural Resources

CBSE Class 11 Physics

Part I

Units and measurements: 

  • Measurement of length 
  • Measurement of mass 
  • Measurement of time 
  • Accuracy, precision of instruments and errors in measurement 
  • Significant figures 

Motion in a straight line: 

  • Position, path length and displacement 
  • Average velocity and average speed 
  • Relative velocity 

Motion in a plane: 

  • Relative velocity in two dimensions 

Work, energy and power: 

  • Various forms of energy - the law of conservation of energy 

System of particles and rotational motion 

  • Theorems of perpendicular and parallel axes 
  • Rolling motion 


  • Geostationary and polar satellites   
  • Weightlessness 

Part II 

Mechanical Properties of Solids 

  • Elastic behaviour of solid 


  • Heat engines 
  • Refrigerators and heat pumps 


  • Some systems executing Simple Harmonic Motion (Only Simple pendulum is considered) 
  • Damped simple harmonic motion355 Forced oscillations and resonance.


  • Doppler effect

Completely Deleted Chapter:

Physical world

CBSE Class 12 Physics

Part I 

Electric charges and fields:  

  • Charge by induction  

Current electricity:

  • Combination of resistance –Series and Parallel. 
  • Meter bridge and Potentiometer. 

Moving charges and magnetism: 

  • Only Toroid part is deleted. 

Magnetism and matter: 

  • The earth’s magnetism. 
  • Permanent magnet and Electromagnet. 

Electromagnetic induction: 

  • Energy Consideration: A quantitative study. 
  • Eddy current. 

Alternating current:  

  • LC Oscillator. 

Part II 

Ray optics and optical instruments: 

  • Some natural phenomena due to sunlight.

Dual nature of radiation and matter

  • Davisson and Germer Experiment. 

Semiconductor electronics: materials, devices and simple circuits 

  • Special purpose p-n Junction Diodes 
  • Digital Electronics and Logic Gates

CBSE Class 11 Chemistry

Completely Deleted Chapters:

  • States of Matter
  • Hydrogen
  • The s-block Elements
  • The p-block Elements
  • Environmental Chemistry

CBSE Class 12 Chemistry

Completely Deleted Chapters:

  • The Solid State
  • Surface Chemistry
  • General Principles and Processes of Isolation of Elements
  • The p-Block Elements
  • Polymers
  • Chemistry in Everyday Life

CBSE Class 11 Biology

The Living World

  • What is Living?
  • Taxonomical Aids

Plant Kingdom

  • Plant Life cycles
  • Alternation of Generations

Morphology of Flowering Plants

  • Modifications of Root
  • Modifications of Stem
  • Modifications of Leaves
  • Fabaceae
  • Solanaceae

Anatomy of Flowering Plants

  • Types of Tissues in Plants
  • Secondary Growth

Structural Organisation in Animals

  • Types of Tissues in Animals
  • Anatomy and Morphology of Earthworm
  • Anatomy and Morphology of Cockroach


  • Nature of bond linking monomers in a polymer
  • Dynamic state of body constituents – concept of
  • Metabolism
  • Metabolic basis for living
  • The living state.

Plant Growth and Development

  • Photoperiodism
  • Vernalisation
  • Seed dormancy

Neural Control and Coordination

  • Reflex action and reflex arc
  • Sensory Reception and Processing
  • Eye
  • Ear

CBSE Class 12 Biology

Organisms and Populations

  • Organism and its Environment
  • Major Abiotic Factors
  • Homeostasis
  • Adaptations


  • Ecological Succession
  • Nutrient Cycling
  • Ecosystem Services

Biotechnology and its Applications (Below topics added)

  • Tissue Culture, Micropropagation, 
  • Meristems, Somatic hybridisation

Completely Deleted Chapters:

Reproductions in Organisms

Strategies for Enhancement in Food Production

Environmental Issues


Social Science – Deleted portion for academic year 2023-2024


Deleted Portion

CBSE Class 6 Social Science


Villages, Towns and Trade

  • Finding out about cities: stories, travellers, sculpture and archaeology.

Completely Deleted Chapter:

Traders, Kings and Pilgrims

Social and Political Life: Civics

Key Elements of a Democratic Government


Major Landforms of the Earth

India- Climate, Vegetation and Wildlife

CBSE Class 7 Social Science


Delhi:12th to 15th centuries

  • The Garrison Town to Empire- The Expansion of the Delhi Sultanate

The Mughals (16th to 17th Century 

  • Major Campaigns and Events 
  • A Closer Look at Akbar’s Policies 

Devotional Paths to the Divine

  • The section-’the Saints of Maharashtra’ has been replaced by ‘The Bhakti Movement in the Deccan.

Eighteenth-Century Political Formations

  • The emergence of new states, the old Mughal provinces, Hyderabad, Awadh and Bengal

 Completely Deleted Chapters:

  • Rulers and Buildings
  • Towns, Traders and Craftspersons

Social and Political Life: Civics

  • Struggles for equality.


  • Natural Vegetation and Wildlife
  • Human Environment-Settlement, transport and Communication

CBSE Class 8 Social Science


  • Weavers, Iron smelters and Factory Owners
  • India after Independence

Social and Political Life: Civics

Two chapters ’Why do we need a Parliament?’ and ‘Understanding Laws’ have been clubbed as one chapter as ‘Parliament and the Making of Laws’. Following topics are deleted.

  • Who are the people in the Parliament?
  • Do Laws apply to all?


  • Minerals and Power Resources

CBSE Class 9 Social Science


  • Forest Society and Colonialism (only’ Why Deforestation? ‘To be assessed in final exams)

Below portion to be a part of Interdisciplinary project:

Forest Society and Colonialism

  • The Rise of Commercial Forestry
  • Rebellion in the Forest
  • Forest Transformations in Java

Pastoralists in the Modern World (to be assessed in the Periodic Assessment only)


Natural Vegetation and Wildlife (only Wildlife to be assessed in final exams).

Below topics are for Interdisciplinary Project only)

Types of Vegetation – Tropical Evergreen Forests, Tropical Deciduous Forests, Thorn Forests and Shrubs, Mountain Forests, Mangrove Forests


The Story of Village Palampur (To be assessed in periodic assessment only)

CBSE Class 10 Social Science



  • The Making of a Global World (only the below topics to be assessed in the board exams)

Subtopics:1 to 1.3 Premodern world to Conquest, Disease and Trade

  • The Making of a Global World (below portion is for Interdisciplinary Project only: Subtopics 2 to 4.4

The nineteenth century (1815-1914) to End of Bretton woods & the beginning of “Globalisation.”

  • The Age of Industrialization

(To be assessed in the periodic assessment only)


  • The complete chapter ‘Forest and Wildlife Resources’ has been included in the syllabus.
  • The complete chapter ‘Water resources’ has been included in the syllabus.
  • Lifelines of National Economy (Only below portion to be evaluated in Board Exams)
    • Roadways to Railways
    • Sea ports and airports to be marked in the map.
    • From Pipelines to Tourism as a Trade (portion for Interdisciplinary Project only)


Globalisation And the Indian Economy (only below portion to be evaluated in the Board Examination)

  • What is Globalization?
  • Factors that have enabled Globalisation.

Globalisation And the Indian Economy (below are only for the Interdisciplinary project)

  • Production across the countries 
  • Chinese toys in India 
  • World trade organisation 
  • The Struggle for a Fair Globalisation
  • Consumer Rights (only for project work)


English – Deleted portion for academic year 2023-2024


Deleted Portion

CBSE Class 6 English

Completely Deleted Chapters:

Honey Suckle

  • A game of Chance
  • Desert Animal

A Pact with the Sun

  • The Old Clock Ship
  • What happened to the Reptiles?
  • A strange wrestling match

CBSE Class 7 English

Completely Deleted Chapters:


  • Fire friend and foe
  • A Bicycle in Good Repair
  • The Story of Cricket

An Alien Hand

  • The Desert
  • The cop and the anthem
  • I want Something in cage.

A Homage to our Brave Soldiers (New chapter added)

CBSE Class 8 English

Completely Deleted Chapters:


  • The Great stone face I
  • The Great Stone face II

It So happened

  • Chapter 7- The open window
  • Chapter 9 - COMET 1
  • Chapter 10 - Comet II
  • Chapter 10 repeated

Chapter 8 - Ancient Education System of India (New chapter added)

CBSE Class 9 English

Completely Deleted Chapters:


  • The Bond of Love
  • Packing


  • Remove the Accidental Tourist

Reach for the Top (New chapter added)

CBSE Class 10 English

Completely Deleted Chapters:

First Flight

  • Hundred Dresses I
  • Animal
  • Hundred Dresses II


  • Hack Driver


1. Has CBSE reduced the syllabus for 2023?

Yes, CBSE has reduced almost 30% of the syllabus in major subjects from classes 9 to 12. This step was taken due to the pandemic, along with the approval of the Supreme Court.

2. Are new textbooks with reduced syllabus available for CBSE?

Yes, the new textbooks with rationalised syllabus for the academic year 2023-2024 are now available on their official website

3. What are the changes in CBSE 2023 question pattern?

The latest CBSE board exams will give 40% weightage to MCQs, 40% weightage to subjective-type questions, and the final 20% weightage to competency-based questions.

4. What is the new rule of CBSE for the board exam 2023?

CBSE has decided to go forth with one yearly board exam. It has scrapped the term-wise examination pattern. Students will give annual board exams like before.

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