This Textbook of Engineering Chemistry is intended to provide a comprehensive exposition of different areas of engineering chemistry like organic chemistry, physical chemistry, analytical chemistry, taught in various universities. All the topics are profusely illustrated with their practical applications, figures, schemes, reaction series and formulae in such a way that it should not be difficult for the reader to understand and evaluate the topic. The entire book is divided into four sections: Section I: Organic Chemistry, Section II: Physical Chemistry, Section III: Analytical Chemistry and Section IV: Miscellaneous Topics. Each chapter is accompanied by conceptual, theoretical and solved-unsolved numerical problems. Summary appended at the end of each chapter as nutshell to this book for quick revision should bring home the subject to the students. Latest references of journals, books included in this book should enable the students and teachers to enlarge their mental horizon by consulting this source material. The book also, contains solved numerical problems and detailed explanation of advanced topics with applications, schemes, figures and flow/block diagrams in each chapter. This book is especially written for the students of all NITs/Central/Deemed Universities/IITs, B. Tech., PG students of Chemical Engineering and Technical Institutions both within and outside the country.