Tricky Sterilisation, Culture Media & Pure Culture Techniques Objective Type Questions And Answers

41. Tyndallisation was proposed by
a. Tyndall
b. Pasteur
c. Koch
d. Jenner
Ans: A

42. Viruses can be cultivated in
a. Lab media
b. Broth
c. Living cells
d. None of these
Ans: C

43. By pasteurization
a. All the microorganisms can be removed
b. Only pathogenic forms can be removed
c. Only non-pathogenic forms can be removed
d. All of these are correct
Ans: B

44. The temperature required for pasteurization is
a. Above 100oC
b. Below 100oC
c. 100oC
d. None of these
Ans: B

45. In the medium other than nutrients, if any substance is used in excess, that medium is
a. Enriched medium
b. Special medium
c. Enrichment medium
d. None of these
Ans: A

46. Example for indicator medium is
a. Nutrient Agar
b. Nutrient broth
c. Wilson and Blair
d. Czapeck-dox medium
Ans: C

47. Example of Anaerobic medium is
a. Robertson cooked-meat medium
b. Nutrient agar
c. Nutrient broth
d. Mac-Conkey’s agar
Ans: A

48. The differentiate lactose and non-lactose fermentors, the medium used is
a. Wilson & lair
b. Blood Agar
c. Tetra thionate broth
d. Mac-Conkey’s Agar
Ans: D

49. Best method for getting pure culture is
a. Streak-plate
b. Agar slant
c. Both a & b
d. None of these
Ans: C

50. To transfer cultures from one place to another, the device used is
a. Slant
b. Needle
c. Inoculation loop
d. Autoclave
Ans: B

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