Contain selected topics like resonance, H-bond, hybridization, IUPAC nomenclature, acid-base theory of organic compounds, stereochemistry, structure reactivity relationship and spectroscopy have been discussed early in the book. Subsequent chapters deal with synthetic polymers, aliphatic and aromatic hydrocarbons, alcohols and phenols, ethers, aldehydes, carboxylic acids and their derivatives, amines, carbohydrates, organometallics and terpenes. These topics have been discussed in-depth and in a comprehensive manner. A great deal of attention has been focussed on chemical reactions and their mechanisms. Certain topics of general interest namely CNG, LPG, DNA finger printing, trans fatty acids, soaps and detergents, industrial alcohols, coal tar, octane number, chromatography, and artificial sweeteners have been highlighted at appropriate places. Multiple Choice Questions (MCQs) are appended at the end of each chapter. This book has been designed as a comprehensive textbook for students upto BSc level. In addition, the book will be immensely useful for those preparing for competitive examinations like IIT, AIEEE, Medical entrance and others.