Chemical Engineering has a rich past and a bright future. Every year India is producing more than 8000 graduates in chemical engineering discipline. Many of these opt for higher studies in chemical engineering and related disciplines. The admission to post graduate programs requires a GATE (Graduate Aptitude Test in Engineering) score. Every year GATE in chemical engineering is conducted. The subjects included for this examination are: Engineering Mathematics. Fluid Mechanics and Mechanical Operation. Process Calculations. Chemical Engineering Thermodynamics. Heat Transfer. Mass Transfer. Instrumentation and Process Control. Chemical Reaction Engineering. Chemical Technology. Plant Design and Economics. There is a strong need for a single book for this examination which covers the fundamentals of the above subjects along with short numerical problems and multiple choice type question. The present book fulfils these requirements. GATE (Chemical Engineering) question papers of previous years are also given along with their solutions. further in the last chapter a model test paper is appended for practice.