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MCQs

Total Questions : 114 | Page 12 of 12 pages
Question 111. . A fed-batch reactor initially contains 2 litre of medium. If it was fed at 1 litre per hour, then after 10 hours, the volume of the reactor will be
  1.    1 litre
  2.    2 litre
  3.    3 litre
  4.    13 litre
 Discuss Question
Answer: Option B. -> 2 litre
Question 112. . A Bacillus sp. produces an antibiotic only during the stationary phase when grown in a batch culture. If grown in a 5 litre continuous culture, the steady state productivity of the antibiotic
  1.    will increase until the culture washes out
  2.    will decrease after washout
  3.    will be zero
  4.    will be infinite
 Discuss Question
Answer: Option C. -> will be zero
Question 113. .  In a fluidized bed reactor, the function of the disengagement zone is to
  1.    reduce loss of particles from the reactor
  2.    reduce the velocity of the particles near the surface of the reactor
  3.    reduce foaming problems
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 114. . Saccharomyces cerevisiae produces high biomass yields at low glucose concentrations and high dissolved oxygen concentrations. Which of the following should be followed for maximizing its biomass productivity?
  1.    Batch fermenter with a high initial glucose concentration
  2.    Continuous fermenter with a low initial glucose concentration
  3.    Fed batch fermenter
  4.    All of the above
 Discuss Question
Answer: Option C. -> Fed batch fermenter

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