Class 11 – 12 · subject library

Senior Secondary Chemistry

Chapter notes, previous year papers, sample tests and Q&A for chemistry — across CBSE, ICSE, IB and state boards. Free.

19 chapters~347 min read Free · printable

📌 Board-specific:CBSE Chemistry ICSE Chemistry ISC Chemistry IB Chemistry

Chapters

19 chapters — sequenced for revision.

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Some Basic Concepts of Chemistry

The language of chemistry — mole concept, empirical and molecular formulas, stoichiometry, limiting reagents, and concentration units. CBSE Class 11 Chemistry Chapter 1.

CBSE⏱ 15 minRead chapter

Structure of Atom

The subatomic world — atomic models, Bohr's theory, quantum numbers, atomic orbitals, and electronic configurations. CBSE Class 11 Chemistry Chapter 2.

CBSE⏱ 15 minRead chapter

Classification of Elements and Periodicity

The periodic table — historical development, electronic configurations, periodic trends in atomic radius, ionisation energy, electron gain enthalpy, and electronegativity. CBSE Class 11 Chemistry Chapter 3.

CBSE⏱ 15 minRead chapter

Chemical Bonding and Molecular Structure

The forces that hold atoms together — ionic and covalent bonds, VSEPR theory, hybridisation, molecular orbital theory, and hydrogen bonding. CBSE Class 11 Chemistry Chapter 4.

CBSE⏱ 15 minRead chapter

Thermodynamics

The energy changes in chemical reactions — enthalpy, Hess's law, entropy, Gibbs free energy, and the criterion of spontaneity. CBSE Class 11 Chemistry Chapter 5.

CBSE⏱ 15 minRead chapter

Equilibrium

Chemical equilibrium — the law of mass action, Kc and Kp, Le Chatelier's principle, acid-base equilibria, pH, buffer solutions, and solubility product. CBSE Class 11 Chemistry Chapter 6.

CBSE⏱ 15 minRead chapter

Redox Reactions

Oxidation and reduction, oxidation numbers, balancing redox equations, and the electrochemical series. CBSE Class 11 Chemistry Chapter 7.

CBSE⏱ 15 minRead chapter

Organic Chemistry — Basic Principles

The foundations of organic chemistry — IUPAC nomenclature, isomerism, inductive effect, resonance, and reaction mechanisms. CBSE Class 11 Chemistry Chapter 8.

CBSE⏱ 15 minRead chapter

Hydrocarbons

The chemistry of alkanes, alkenes, alkynes, and aromatic hydrocarbons — preparation, physical and chemical properties, and reaction mechanisms. CBSE Class 11 Chemistry Chapter 9.

CBSE⏱ 15 minRead chapter

Solutions

A SOLUTION is a HOMOGENEOUS mixture of two or more substances. This chapter explores concentration terms, Raoult's law, colligative properties (freezing point depression, boiling point elevation, osmotic pressure), and the van't Hoff factor for electrolytes. CBSE Class 12 Chemistry Chapter 1.

CBSE⏱ 20 minRead chapter

Electrochemistry

Chemical reactions can GENERATE electricity — and electricity can DRIVE chemical reactions. This is ELECTROCHEMISTRY, the study of the INTERCONVERSION of chemical and electrical energy. CBSE Class 12 Chemistry Chapter 2.

CBSE⏱ 22 minRead chapter

Chemical Kinetics

Thermodynamics tells us IF a reaction will occur. KINETICS tells us HOW FAST it will occur. This chapter explores the rates of chemical reactions, the factors that affect them, and the mechanisms by which they proceed. CBSE Class 12 Chemistry Chapter 3.

CBSE⏱ 20 minRead chapter

d- and f-Block Elements

The d-block elements (TRANSITION METALS) sit in the middle of the periodic table — and they are the MOST chemically diverse group. This chapter covers their properties, compounds, and the f-block (lanthanoids and actinoids). CBSE Class 12 Chemistry Chapter 4.

CBSE⏱ 22 minRead chapter

Coordination Compounds

A COORDINATION COMPOUND is formed when a central metal ion is SURROUNDED by a group of molecules or ions (ligands). These compounds are VITALLY important in biology, medicine, and industry. CBSE Class 12 Chemistry Chapter 5.

CBSE⏱ 22 minRead chapter

Haloalkanes and Haloarenes

HALOALKANES and HALOARENES are hydrocarbons with HALOGEN atoms (F, Cl, Br, I) attached. They are the starting materials for a VAST range of organic transformations — from pharmaceuticals to polymers. CBSE Class 12 Chemistry Chapter 6.

CBSE⏱ 22 minRead chapter

Alcohols, Phenols, and Ethers

ALCOHOLS (R−OH), PHENOLS (Ar−OH), and ETHERS (R−O−R') are oxygen-containing organic compounds with VAST importance in chemistry, biology, and industry. CBSE Class 12 Chemistry Chapter 7.

CBSE⏱ 22 minRead chapter

Aldehydes, Ketones, and Carboxylic Acids

ALDEHYDES (R−CHO), KETONES (R−CO−R'), and CARBOXYLIC ACIDS (R−COOH) are THREE of the most important classes of carbonyl compounds. They are CENTRAL to organic synthesis and biological chemistry. CBSE Class 12 Chemistry Chapter 8.

CBSE⏱ 24 minRead chapter

Amines

AMINES are organic derivatives of AMMONIA (NH₃), where one or more alkyl/aryl groups replace hydrogen atoms. They are fundamental to biochemistry — amino acids, neurotransmitters, and alkaloids are all amines. CBSE Class 12 Chemistry Chapter 9.

CBSE⏱ 18 minRead chapter

Biomolecules

BIOMOLECULES are the MOLECULES OF LIFE — carbohydrates, proteins, vitamins, nucleic acids, and enzymes. This chapter explores their structure, function, and biological significance. CBSE Class 12 Chemistry Chapter 10.

CBSE⏱ 20 minRead chapter