This multiple choice question set contains frequently asked questions in bioprocess engineering at university level and competitive examinations like GATE, GPAT etc. It also contains answer and explanation of questions for self assessment and comprehensive understanding. It contains questions from following topics in bioprocess engineering such as Microbial growth patterns and kinetics in batch culture, Phases of cell growth in batch cultures, fed batch and continuous cultures, simple structured and unstructured kinetic models for microbial growth. Monod model, growth of filamentous organisms (Pellet Growth Kinetics) & yeast, growth associated and non growth associated product formation, substrate and product inhibition on cell growth and product formation Batch, Fed Batch & Continuous operation of mixed bioreactors. Oxygen transfer in bioreactors, Measurement of volumetric oxygen transfer coefficient and Oxygen transfer in large bioreactor. Bioreactor control mechanism, Physical, Chemical and Biological environment of bioreactor Microbial growth parameters, Environmental conditions affect growth kinetics. Kinetics of thermal death of microorganisms; Batch sterilization, Continuous sterilization; Sterilization of air: Methods, filters and design of depth filters. Stoichiometry of cell growth and product formation, elemental balances, degree of reduction of substrate and biomass, available electron balances, yield coefficients of biomass and product formation, maintenance coefficients, Material and energy balance in steady and unsteady reaction systems.