Most Recently Asked Industrial Micro Biology Multiple Choice Questions And Answers

61. Aspergillus niger is used generally for the production of
a. Ethanol
b. Penicillin
c. Citric acid
d. Lactic acid
Ans: C

62. In the citric acid production, the pH to be maintained in the fernmenter is
a. 7.0
b. 5.0 to 6.0
c. 8.0 to 9.0
d. 1.0 to 6.0
Ans: B

63. The required temperature for the production of citric acid is
a. 10oC – 80oC
b.30oC – 50oC
c. 20oC – 50oC
d.25oC – 30oC
Ans: D

64. The penicillin produced in large scale submerged fermentations are
a. Penicillin-A
b. Penicillin-D
c. Penicillin-G
d. None of these
Ans: C

65. The strain of fungi used for the large scale production of penicillin is
a. Penicillium chrysogenum
b. P-notatum
c. Streptomyces Aurecus
d. Saccharomyces sps
Ans: A

66. 6-amino penicillic acid is prepared from penicillin sps by
a. Acylase
b. Punicillin acylase
c. Penicillinone
d. None of these
Ans: B

67. The pH, to be maintained for the production of penicillin is
a. 7.5
b. 6.5
c. 8.0
d. 5.0
Ans: B

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