This textbook is targetted to undergraduate students in chemical engineering, chemical technology, and biochemical engineering for courses in mass transfer, separation processes, transport processes, and unit operations.This book is recommended in NIT Agartala, Assam, Assam Engineering College, Assam, IIT Guwuhati, Assam, West Bengal University of Technology (WBUT), West Bengal for B.Tech , Calcutta Institute of Technology, West Bengal and NIT Rourkela, Odisha for B.Tech.