CBSE Class 11 Chemistry: chapter-wise study guide

All 9 chapters of CBSE Class 11 Chemistry for the 2026-27 session. Each chapter page explains the ideas, gives tricks to remember them, shows where students lose marks, and links to practice.

9 chapters
18 topic pages

Start with the first chapter

Exam note: School annual exam: theory 70 marks (3 hours) and practicals 30. 's- and p-Block Elements' and 'The Gaseous State' are taught from CBSE reading material and assessed in school only (formatively).

Chapters

1
Some Basic Concepts of Chemistry
- Mole Concept, Molar Mass and Formula Calculations
- Stoichiometry, Limiting Reagent and Solution Concentration
2
Structure of Atom
- Bohr Model and the Hydrogen Spectrum
- Quantum Numbers, Orbitals and Electronic Configuration
3
Classification of Elements and Periodicity in Properties
- Atomic Radius, Electronegativity and Chemical Periodicity
- Ionisation Enthalpy and Electron Gain Enthalpy
4
Chemical Bonding and Molecular Structure
- MO Theory: Oxygen, Nitrogen and Related Diatomic Species
- VSEPR Theory, Shapes and Hybridisation
5
Thermodynamics
- Enthalpy Changes, Hess's Law and Calorimetry
- Entropy, Gibbs Energy and Spontaneity
CBSE calls this unit 'Chemical Thermodynamics'.
6
Equilibrium
- Equilibrium Constant, Reaction Quotient and Le Chatelier's Principle
- Ionic Equilibrium: pH, Weak Electrolytes, Buffers and Solubility Product
7
Redox Reactions
- Oxidation Number and Balancing Redox Equations
- Redox Titrations, Electrode Potential and Displacement Reactions
8
Organic Chemistry – Some Basic Principles and Techniques
- Electronic Effects, Reactive Intermediates and Types of Organic Reactions
- IUPAC Nomenclature and Structural Isomerism
9
Hydrocarbons
- Alkenes and Alkynes: Addition Reactions, Markovnikov Rule and Ozonolysis
- Benzene: Aromaticity, Electrophilic Substitution and Directing Effects

Syllabus source: CBSE Chemistry syllabus 2026-27 (Classes XI-XII), NCERT textbooks (Reprint 2026-27)