This book, based on the CBSE syllabus, is meant for students of class 11 of Bihar, Jharkhand and all other state boards following the CBSE syllabus. It covers topics such as physical chemistry, inorganic chemistry and organic chemistry. The physical chemistry section has adequate number of solved numerical examples. A large variety of objective questions with their answers is given in the last section of the book. This book will also be helpful for students preparing for various competitive examinations.