This book being indispensable chemical engineering/technology students and graduates over the last thirty six years needed another updating to keep pace with the changing domain of chemical engineering education in the country and abroad. In this edition GATE questions upto 2019, have been included. Important questions and Furnace Technology have been included in chapter on Fuels and Combustion and that of nuclear power engineering and refractory technology have been merged in chapter on Miscellaneous Questions. This book in its present form has been designed to serve as an ‘Encyclopedia of Chemical Engineering’ so as to be ready reckoner apart from being useful for all types of written tests and interviews faced by Chemical Engineering students. It will also serve as a ‘Handbook of Chemical Engineering’ for ready reference by practicing chemical engineers in any relevant profession. Besides, teachers, employers and interviews of chemical engineers will also find this book useful for their use.