Prof. A.Y. Waghale is a very senior and a highly experienced teacher of Chemistry, teaching to undergraduate classes. He has specialised in coaching the students for entrance examinations like PMT, SEEE, AIPMT, AIEEE, IIT-Jee, etc. His rich experience in the field has its own reflections in the present book. He has retired, some ten years back, after a fruitful service of 37 years, as a teacher of Chemistry. He has been associated with various workshops, seminars, discussions, etc., on the subject, organised by different authorities of RTM Nagpur University and Maharashtra Government. He was associated with various activities organised by the University for Betterment of teaching of Chemistry to undergraduate classes. The author has put his soul into this book to make it up-to-date and acceptable to the students as well as the teachers of the subject.