CBSE Class 11 Deleted Syllabus 2025-26 Subject-Wise

Physical World

Complete Chapter

Units and Measurements

Length, mass, time measurements; accuracy and precision of instruments; errors in measurement

Motion in a Straight Line

Position-time graph, speed and velocity. Average Speed. Relative Velocity.

Motion in a Plane

Relative Velocity, Acceleration Projectile

Work, Energy and Power

Conservation of mechanical energy (kinetic and potential energies)

System of Particles and Rotational Motion

Parallel and perpendicular axes theorems and their applications.

Gravitation

Geo-stationary satellites, escape velocity changed to escape speed

Mechanical Properties of Solids

Elastic behaviour changed to Elasticity, shear modulus of rigidity changed to shear modulus (qualitative idea only)

Mechanical Properties of Fluids

Bernoulli’s theorem and its applications changed to Bernoulli’s theorem and its simple applications

Thermal Properties of Matter

Greenhouse effect

Thermodynamics

Isothermal and adiabatic processes, reversible and irreversible processes, Heat engine and refrigerator

Kinetic Theory

Oscillations

Free, forced and damped oscillations (qualitative ideas only), resonance.

Waves

Doppler effect

Chemistry – Part I

V. States of Matter: Gases and Liquids

Entire Chapter

Chemistry – Part II

IX. Hydrogen

Entire Chapter

Chemistry – Part II

X. s-Block Elements

Entire Chapter

Chemistry – Part II

XI. Some p-Block Elements

Entire Chapter

Chemistry – Part II

XIV. Environmental Chemistry

Entire Chapter

1

The Living World

Tools for study of taxonomy: museums, zoological parks, herbaria, botanical gardens.

3

Plant Kingdom

Angiosperms, Plant Life Cycle and Alternation of Generations

5

Morphology of Flowering Plants

Modifications of different parts of flowering plants: root, stem, leaf, inflorescence, flower, fruit and seed.

7

Structural Organisation in Animals

Morphology, anatomy and functions of different systems of an insect (cockroach)

9

Biomolecules

Nature of Bond Linking Monomers in a Polymer, Dynamic State of Body Constituents—Concept of Metabolism, Metabolic Basis for Living.

11

Transport in Plants

Complete Chapter Removed

12

Mineral Nutrition

Complete Chapter Removed

15

Plant - Growth and Development

Seed dormancy; vernalisation; photoperiodism.

16

Digestion and Absorption

Complete Chapter Removed

21

Neural Control and Coordination

Reflex action; sensory perception; sense organs; elementary structure and functions of eye and ear.

1

Sets

Power set.

3

Trigonometric Functions

General solution of trigonometric equations of the type sin y = sin a, cos y = cos a and tan y = tan a.

4

Principle of Mathematical Induction

Complete Chapter Removed.

5

Complex Numbers and Quadratic Equations

Polar representation of complex numbers. Statement of Fundamental Theorem of Algebra, solution of quadratic equations in the complex number system. Square root of a complex number.

6

Linear Inequalities

Graphical solution of linear inequalities in two variables. Graphical method of finding a solution of system of linear inequalities in two variables.

8

Binomial Theorem

General and middle term in binomial expansion.

9

Sequence and Series

Arithmetic Progression, Sum to n terms of Special Series.

10

Straight Lines

Intercept normal form. General equation of a line. Equation of family of lines passing through the point of intersection of two lines.

12

Introduction to Three-dimensional Geometry

Section Formula.

14

Mathematical Reasoning

Complete Chapter Removed.

15

Statistics

Analysis of frequency distributions with equal means but different variances.

16

Probability

Random experiments; outcomes, sample spaces (set representation).