An outgrowth of more than three decades of classroom teaching experience, this book provides a comprehensive treatment of the subject. It comprises three parts; Inorganic, Organic and Physical Chemistry. Illustrations and diagrams are provided to help students in understanding the chemical structures and reactions. This book will meet the requirements of undergraduate students of B.Sc. First Year of all Indian universities. Part-I: Inorganic Chemistry: 1. Atomic Structure, 2. Periodic Properties, 3. Covalent Bond, 4. Ionic Bond, 5. s-Block Elements, 6. p-Block Elements, 7. Chemistry of Noble Gases, Part-II: Organic Chemistry: 1. Structure and Bonding, 2. Mechanism of Organic Reactions, 3. Stereochemistry of Organic Compounds, 4. Alkanes and Cycloalkanes, 5. Alkenes, Cycloalkenes, Dienes and Alkynes, 6. Arenes and Aromaticity, 7. Alkyl and Aryl Halides, Part-III: Physical Chemistry: 1. Mathematical Concepts and Computers, 2. Gaseous States, 3. Liquid State, 4. Solid State, 5. Colloidal State, 6. Chemical Kinetics, 7. Catalysis, 8. Thermodynamics-I