The book entitled Engineering chemistry in the twentieth edition, has been completely revised in accordance with the latest syllabus (Regulation 2021) of I- semester B.E & B.TECH courses of “ANNA UNIVERSITY” under Choice Based Credit System (CBSC) TamilNadu
The unique features of this edition
• This edition is thoroughly revised and updated in such a way that it contains answers for all the questions (up to Nov/Dec 2019) of all Anna University Examination, Guindy, Anna University.
• A large number of solved problems from ANNA UNIVERSITY question papers( up to Nov/Dec 2019) are also provided at the respective chapters.
• At end of the book , 2marks Q &A of all ANNA UNIVERSITY question papers for all the chapters up to Nov/Dec 2019 are added.

I hope that this book will be useful to both teachers and students. Finally i would request the readers to kindly send their Valuable comments and suggestions towards the improvement of the book and the same will be gratefully acknowledged.