Book excerpt: This textbook has been designed to meet the needs of B.Sc. (Honours) Second Semester students of Chemistry as per the UGC Choice Based Credit System (CBCS). Maintaining the traditional approach to the subject, this textbook lucidly explains the basics of Organic and Physical Chemistry. Important topics such as alkanes, alkenes, alkynes, stereochemistry, aliphatic hydrocarbons, thermochemistry, chemical thermodynamics and chemical equilibrium are aptly discussed to give an overview of organic and physical chemistry. Laboratory work has also been included to help students achieve solid conceptual understanding and learn experimental procedures.