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MCQs

Total Questions : 62 | Page 5 of 7 pages
Question 41. . The disk centrifuge is the type of centrifuge used most often for bio separations due to its
  1.    continuous operation
  2.    lesser cost
  3.    higher speed
  4.    ease in operation
 Discuss Question
Answer: Option B. -> lesser cost
Question 42. . The effectiveness of a solvent can be measured by the
  1.    distribution coefficients
  2.    selectivity
  3.    both (a) and (b)
  4.    diffusivity
 Discuss Question
Answer: Option C. -> both (a) and (b)
Question 43. . The stage wise operation of adsorption is called
  1.    contact filtration
  2.    conventional adsorption
  3.    affinity adsorption
  4.    ion exchange
 Discuss Question
Answer: Option A. -> contact filtration
Question 44. . Which of the following is not the physical method for the cells rupturing?
  1.    Milling
  2.    Homogenization
  3.    Ultrasonication
  4.    Enzymatic digestion
 Discuss Question
Answer: Option D. -> Enzymatic digestion
Question 45. . Conventional adsorption is a
  1.    reversible process
  2.    irreversible process
  3.    either reversible or irreversible
  4.    none of these
 Discuss Question
Answer: Option A. -> reversible process
Question 46. . If the solute passes through membrane freely, the the rejection coefficient (s) is
  1.    1
  2.    0
  3.    >1
 Discuss Question
Answer: Option B. -> 0
Question 47. . If the membrane rejects all solute, the rejection coefficient (s) is
  1.    1
  2.    0
  3.    >1
 Discuss Question
Answer: Option A. -> 1
Question 48. . In antibiotic manufacturing processes, the fermentation time ranges from
  1.    2-3 weeks
  2.    1-2 weeks
  3.    4-5 weeks
  4.    2-4 weeks
 Discuss Question
Answer: Option C. -> 4-5 weeks
Question 49. . The conventional filtration involves the separation of large particles generally
  1.    dp>5μm
  2.    dp>10μm
  3.    dp>15μm
  4.    dp>20μm
 Discuss Question
Answer: Option B. -> dp>10μm
Question 50. . Which of the operation does not come under upstream processing?
  1.    Media preparation
  2.    Inoculum development
  3.    Effluent treatment
  4.    Storage of raw material
 Discuss Question
Answer: Option C. -> Effluent treatment

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