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Bioprocess Engineering PYQs

27 previous year questions across 14 subtopics · answers and explanations included

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Showing 27 questions · page 2 of 2

21

Which of the following is not a suitable material for a depth filter used in air sterilization?

HardView answer

22

At what condition does the specific growth rate of the microorganisms decline in a constant volume fed-batch culture

HardView answer

23

A diafiltration process is used to remove salts from a protein solution of 1L. After 1L of make-up buffer (without salts) has been added to this system, the residual salt concentration would be _____________ of the original.

MediumDownstream Processing - DiafiltrationView answer

24

In a batch culture of cells following Monod Kinetics, the declining log phase lasts longer when:

MediumBatch Culture & Monod KineticsView answer

25

A stirred tank bioreactor of 2.7 m^3 is agitated using a Rushton turbine with diameter 0.5 m and stirrer speed of 1 s^{-1} . If the fermentation broth has viscosity and density of 10^{-2} Pa.s and 1000 kg.m^{-3} respectively, the mixing time (in seconds) for…

HardView answer

26

In large scale fermentation processes, corn steep liquor is mainly used as a

MediumView answer

27

The equation for aerobic production of acetic acid from ethanol is: C_2H_5OH + O_2 \rightarrow CH_3CO_2H + H_2O Acetobacter aceti bacteria are added to vigorously-aerated medium containing 10 g.l^{-1} ethanol. After some time, the ethanol concentration is 2…

MediumView answer