The book ” Enginnering Chemistry-I & II is written for I & II” sem polytechnic students in accordance with tha latest revised syllabus
(N-Scheme) of board of Examinations,Directorate of technical Education, chennnai.

The Unique features of this edition
• All the topics are revised with examples, illustrations and diagrams wherever they are necessary.
• More problems are selected from board Examination questions papers, solved and added in the respective chapters.
• At the end of each chapter, Board exam’s part B & C questions and problems (upto oct 2019) are added for practice.
• At the end of each sem part A Q & A is added . At the end of book solved Board Exam Soved Question papers upto Feb 2022 are attached.

Besides these I present this book in a self learning style that will be best appreciated even by the average students. 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.