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NCERT Books for Class 11 Chemistry PDF (Part 1 and 2) for CBSE 2025 – 2026

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Overview of NCERT Class 11 Chemistry Book 

One of the few courses in Class 11 where students frequently struggle is chemistry. They struggle to understand the subject since the principles involved in chemistry are hard to understand.

NCERT Book for Class 11 Chemistry Chapters 

Unit 1- Some Basic Concepts of Chemistry  

Unit 2- Structure of Atom  

Unit 3- Classification of Elements and Periodicity in Properties  

Unit 4- Chemical Bonding and Molecular Structure  

Unit 5- States of Matter  

Unit 6- Thermodynamics  

Unit 7- Equilibrium  

Unit 8- Redox Reactions  

Unit 9- Hydrogen  

Unit 10-The s-block Elements  

Unit 11- The p-Block Elements  

Unit 12 – Organic Chemistry: Some Basic Principles and Techniques  

Unit 13- Hydrocarbons  

Unit 14 – Environmental Chemistry

NCERT Class 11 Chemistry Book – Part 1

Chapter 1: Some Basic Concepts of Chemistry

SubtopicSubtopics
Introduction to ChemistryOverview of the subject’s scope and significance
Importance of studying ChemistryUnderstanding the relevance and applications of chemistry
Laws of Chemical CombinationsExplanation of laws governing chemical combinations
Dalton’s Atomic TheoryPostulates and implications of Dalton’s atomic theory
Atomic and Molecular MassesDefinitions and calculations related to atomic and molecular masses
Mole Concept and Molar MassConceptual understanding and calculations involving moles and molar mass
Percentage CompositionDetermination of percentage composition in compounds
Empirical and Molecular FormulasDerivation and application of empirical and molecular formulas
Chemical Equations and StoichiometryBalancing equations and stoichiometric calculations
Limiting Reactants and Yield of ReactionConcepts related to limiting reactants and theoretical yield
Concentration of SolutionsMeasurement and expression of solution concentration
Basic Concepts of Volumetric AnalysisIntroduction to volumetric analysis techniques

Chapter 2: Structure of Atom

In this chapter you will cover subatomic particles, Thomson’s atomic model, Rutherford’s atomic model, Bohr’s model and the quantum mechanical model of the atom. 

Chapter 3: Classification of Elements and Periodicity in Properties

The topics covered in Classification of Elements and Periodicity in Properties chapter include the following:

  • Genesis of periodic classification
  • Modern periodic law and the present form of the periodic table
  • Nomenclatures of elements with atomic numbers greater than 100
  • Electronic configurations of elements and the periodic table
  • The s-block, p-block, d-block, and f-block elements
  • Metals, non-metals and metalloids
  • Periodic trends in properties of elements
  • Trends in physical properties
  • Trends in chemical properties
  • Trends in chemical reactivity

Chapter 4: Chemical Bonding and Molecular Structure

The topics covered in chapter 4 are given below.

  • VSEPR theory
  • Lewis structures
  • Valence bond theory
  • The polar character of covalent bonds
  • The concept of hybridization
  • The molecular orbital theory of homonuclear diatomic molecules
  • Hydrogen bonding

Chapter 5: Thermodynamics

Subtopics has in NCERT Solutions for Class 11 Chemistry Chapter 5 Thermodynamics

  1. Thermodynamic Terms
    • The System and the Surroundings
    • Types of Thermodynamic Systems
    • State of the System
    • Internal Energy as a State Function
  2. Applications
    • Work
    • Enthalpy, H
  3. Measurement of ΔU and ΔH: Calorimetry
  4. Enthalpy Change and Reaction Enthalpy
  5. Enthalpies for Different Types of Reactions
  6. Spontaneity
  7. Gibbs Energy Change and Equilibrium

Chapter 6: Equilibrium

Given below are the subtopics included in NCERT Class 11 Chemistry Chapter 6 – Equilibrium

  1. Solid-liquid Equilibrium
    • Liquid-vapour Equilibrium
    • Solid-vapour Equilibrium
    • Equilibrium Involving Dissolution of Solid or Gases in Liquids
    • General Characteristics of Equilibria Involving Physical Processes
  2. Equilibrium in Chemical Processes – Dynamic Equilibrium
  3. Law of Chemical Equilibrium and Equilibrium Constant
  4. Homogeneous Equilibria
    • Equilibrium Constant in Gaseous Systems
  5. Heterogeneous Equilibria
  6. Applications of Equilibrium Constants
    • Predicting the Extent of a Reaction
    • Predicting the Direction of the Reaction
    • Calculating Equilibrium Concentrations
  7. Relationship between Equilibrium Constant K, Reaction Quotient Q and Gibbs Energy G
  8. Factors Affecting Equilibria
    • Effect of Concentration Change
    • Effect of Pressure Change
    • Effect of Inert Gas Addition
    • Effect of Temperature Change
    • Effect of a Catalyst
  9. Ionic Equilibrium in Solution
  10. Acids, Bases and Salts
    • Arrhenius Concept of Acids and Bases
    • The Bronsted-lowry Acids and Bases
    • Lewis Acids and Bases
  11. Ionisation of Acids and Bases
    • The Ionisation Constant of Water and Its Ionic Product
    • The pH Scale
    • Ionisation Constants of Weak Acids
    • Ionisation of Weak Bases
    • The Relation Between Ka and Kb
    • Di- and Polybasic Acids and Di- and Polyacidic Bases
    • Factors Affecting Acid Strength
    • Common Ion Effect in the Ionisation of Acids and Bases
    • Hydrolysis of Salts and the Ph of Their Solutions
  12. Buffer Solutions
  13. Solubility Equilibria of Sparingly Soluble Salts
    • Solubility Product Constant
    • Common Ion Effect on Solubility of Ionic Salts

NCERT Class 11 Chemistry Book – Part 2

Chapter 7: Redox Reactions

  1. Classical Idea of Redox Reactions – Oxidation And Reduction Reactions
  2. Redox Reactions in Terms of Electron Transfer Reactions
    • Competitive Electron Transfer Reactions
  3. Oxidation Number
    • Types of Redox Reactions
    • Balancing of Redox Reactions
    • Redox Reactions as the Basis for Titrations
    • Limitations of the Concept of Oxidation Number
  4. Redox Reactions and Electrode Processes.

Chapter 8: Organic Chemistry – Some Basic Principles and Techniques

Topic covered in Class 11 Chemistry Chapter 8: Organic Chemistry – Some Basic Principles and Techniques

  1. General Introduction
  2. Tetravalence of Carbon: Shapes of Organic Compounds
  3. Structural Representations of Organic Compounds
    1. Complete, Condensed and Bond-line Structural Formulas
    2. Three-dimensional Representation of Organic Molecules
  4. Classification of Organic Compounds
  5. Nomenclature of Organic Compounds
    1. The IUPAC System of Nomenclature
    2. Iupac Nomenclature of Alkanes
    3. Nomenclature of Organic Compounds Having Functional Group(S)
    4. Nomenclature of Substituted Benzene Compounds  
  6. Isomerism
    1. Structural Isomerism
    2. Stereoisomerism
  7. Fundamental Concepts in Organic Reaction Mechanism
    1. Fission of a Covalent Bond
    2. Nucleophiles and Electrophiles
    3. Electron Movement in Organic Reactions
    4. Electron Displacement Effects in Covalent Bonds
    5. Inductive Effect
    6. Resonance Structure
    7. Resonance Effect
    8. Electromeric Effect (E Effect)
    9. Hyperconjugation
    10. Types of Organic Reactions and Mechanisms
  8. Methods of Purification of Organic Compounds
    1. Sublimation
    2. Crystallisation
    3. Distillation
    4. Differential Extraction
    5. Chromatography
  9. Qualitative Analysis of Organic Compounds
    1. Detection of Carbon and Hydrogen
    2. Detection of Other Elements
  10. Quantitative Analysis
    1. Carbon and Hydrogen
    2. Nitrogen
    3. Halogens
    4. Sulphur
    5. Phosphorus
    6. Oxygen

Chapter 9: Hydrocarbons

Topics covered in Class 11 Chemistry Chapter 9 – Hydrocarbons

  1. Classification
  2. Alkanes
    1. Nomenclature and Isomerism
    2. Preparation
    3. Properties
    4. Conformations
  3. Alkenes
    1. Structure of Double Bond
    2. Nomenclature
    3. Isomerism
    4. Preparation
    5. Properties
  4. Alkynes
    1. Nomenclature and Isomerism
    2. Structure of Triple Bond
    3. Preparation
    4. Properties
  5. Aromatic Hydrocarbon
    1. Nomenclature and Isomerism
    2. Structure of Benzene
    3. Aromaticity
    4. Preparation of Benzene
    5. Properties
    6. Directive Influence of a Functional Group in Monosubstituted Benzene
  6. Carcinogenicity And Toxicity

How to Use NCERT Class 11 Chemistry Books Effectively

Before diving into the NCERT Class 11 Chemistry book, take a moment to familiarize yourself with the syllabus. Knowing what topics are covered will help you create a study plan and allocate time wisely.

NCERT books are designed to build a strong foundation.Begin with the basics and gradually progress to more complex topics. This step-by- step approach ensures a thorough understanding of each concept.

Frequently Asked Questions:

Question 1: How many chapters are there in the Class 11 Chemistry NCERT Book Part 1?

Answer 1: There are a total 6 chapters in the Class 11 Chemistry NCERT Book Part 1.

Question 2: How many chapters are there in the Class 11 Chemistry NCERT Book Part 2?

Answer 2:  There are a total of 3 chapters in the Class 11 Chemistry NCERT Book Part 2.

Question 3: How can I buy Class 11 Chemistry NCERT books online?

Answer 3: Anyone can buy class 11 Chemistry NCERT books on Amazon or from flipkart.

Question 4: What is the price of a Class 11 Chemistry book online?

Answer 4: Class 11 chemistry cost around 300 rs.

Question 5: What are the other reference books for Class 11 Chemistry?

Answer 5: For class 11 Chemistry, the NCERT textbook is a great foundation, and “ABC of Chemistry” by Modern Publications is a popular reference book. Other options include “Comprehensive Chemistry” by N.K. Verma, S.K. Khanna, and B. Kapila, or “Pradeep’s New Course Chemistry”


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