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MCQs

Total Questions : 40 | Page 4 of 4 pages
Question 31. . Which substrate is used in the fermentation of citric acid?
  1.    Beet molasses
  2.    Sucrose
  3.    Starch hydrolysate
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 32. . Which of the following nitrogen sources is added in the fermentation medium of citric acid production?
  1.    Ammonium salt
  2.    Urea
  3.    Both (a) and (b)
  4.    Peptone
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Question 33. . Vinegar production consists of
  1.    aerobic fermentation
  2.    anaerobic fermentation
  3.    aerobic fermentation followed by anaerobic fermentation
  4.    anaerobic fermentation followed by aerobic fermentation
 Discuss Question
Answer: Option D. -> anaerobic fermentation followed by aerobic fermentation
Question 34. . Cider vinegar is produced from
  1.    fruit juices
  2.    malted grain
  3.    ethanol
  4.    ale
 Discuss Question
Answer: Option A. -> fruit juices
Question 35. . Ethanol is oxidized to acetic acid aerobically using
  1.    Acetobacter
  2.    Gluconobacter
  3.    both (a) and (b
  4.    Lactobacillus
 Discuss Question
Answer: Option C. -> both (a) and (b
Question 36. . Malt vinegar is produced from
  1.    fruit juices
  2.    malted grain
  3.    ethanol
  4.    ale
 Discuss Question
Answer: Option B. -> malted grain
Question 37. . Vinegar production consists of
  1.    aerobic fermentation
  2.    anaerobic fermentation
  3.    aerobic fermentation followed by anaerobic fermentation
  4.    anaerobic fermentation followed by aerobic fermentation
 Discuss Question
Answer: Option D. -> anaerobic fermentation followed by aerobic fermentation
Question 38. . Cider vinegar is produced from
  1.    fruit juices
  2.    malted grain
  3.    ethanol
  4.    ale
 Discuss Question
Answer: Option A. -> fruit juices
Question 39. . Ethanol is oxidized to acetic acid aerobically using
  1.    Acetobacter
  2.    Gluconobacter
  3.    both (a) and (b
  4.    Lactobacillus
 Discuss Question
Answer: Option C. -> both (a) and (b
Question 40. . Malt vinegar is produced from
  1.    fruit juices
  2.    malted grain
  3.    ethanol
  4.    ale
 Discuss Question
Answer: Option B. -> malted grain

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