This book consists of Chapters: Flow of Fluids, Size Reduction, Size Separation, Heat Transfer, Evaporation, Distillation, Drying, Mixing, Filtration, Centrifugation and Materials of Pharmaceutical Plant Construction, Corrosion and its Prevention. Special emphasis is laid on Example, Diagram and Tables, Model Calculations and Long Type Question, Short Type Question and Multiple Choice Question (MCQ?s) with Answers. This book is designed according to the curriculum of undergraduate courses in Pharmacy by Pharmacy Council of India New Syllabus useful All over India.