Preparation for an examination that primarily tests the comprehensive understanding of various undergraduate subjects in engineering and science, demands extensive knowledge and revision of the concepts covered under the GATE 2016 curriculum. GATE is an all India examination administered and conducted jointly by the Indian Institute of Science and seven Indian Institutes of Technology on behalf of National Coordination Board GATE, Department of Higher Education, Ministry of Human Resource Development (MHRD), Government of India. GATE tests the in-depth knowledge and practical knowledge of varied concepts. We at Arihant understand the needs of the students which require comprehensive chapterwise study for in-depth understanding followed by thorough practice of the syllabi to master the concepts.The present book contains last 16 years (2000-2015) solved papers of GATE Chemical Engineering. Last four years (2012-2015) Solved Papers have been given in the beginning to familiarize the aspirants with the current trends of questions asked in GATE Chemical Engineering Examination. A brief description about the syllabus is given in the beginning of each chapter which will help the students to know what topics the chapter covers. The book has been divided into 11 chapters namely Process Calculations, Thermodynamics, Fluid Mechanics Mechanical Operations, Heat Transfer, Mass Transfer, Chemical Reaction Engineering, Instrumentation Process Control, Plant Design Economic, Chemical Technology, Engineering Mathematics and General Aptitude. The previous year questions divided into 1 Mark and 2 Marks Questions have been given chapterwise and yearwise with detailed solutions at the end of every chapter. The book also contains three Mock Tests which will help the candidates to analyze the level of preparation for the upcoming GATE Mechanical Engineering examination.As the book contains ample number of previous years solved questions, it for sure will help candidates get an insight into the examination pattern and the types of questions asked in the GATE Chemical Engineering Examination.