The handbook of Chemistry has been designed for the students studying in Class XI - XII to act as the revision cum Quick Study Resource for various concepts of Chemistry. This handbook is a multipurpose quick revision resource with unique format which displays concepts clearly, places them in context and crisply identifies and describes all the factors involved. This handbook has been divided into 34 chapters namely Basic Concepts of Chemistry, Atomic Structure, Classification of Elements & Periodicity of Properties, States of Matter, The Solid State, Chemical Bonding & Molecular Structure, Thermodynamics, Chemical Equilibrium, Ionic Equilibrium, Solutions, Redox Reactions, Electrochemistry, Chemical Kinetics, Surface Chemistry, Colloidal State, Principle & Processes of Isolation of Elements, Hydrogen, The s-Block Elements, p-Block Elements, The d-and f-Block Elements, Coordination Compounds, Environmental Chemistry, Purification & Characteristics of Organic Compounds, General Organic Chemistry, Hydrocarbons, Haloalkanes & Haloarenes, Alcohols, Phenols & Ethers, Aldehydes, Ketones & Carboxylic Acids, Amines, Polymers, Biomolecules, Chemistry in Everyday Life, Nuclear Chemistry and Analytical Chemistry. The study material of the book has been prepared in the form of compendium, consisting of all important topics, such as concepts, definitions, principles and procedures; well illustrated with examples and diagrams. In the nutshell, this book can be used as a compact and portable reference book for study purpose and for general reference. Due to its simple information and lucid language it can also be used for general reference. This book will prove to be highly useful for aspirants preparing for competitive examinations like JEE Main & Advanced, CBSE AIPMT, AIIMS, etc.