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MCQs

Total Questions : 339 | Page 9 of 34 pages
Question 81. Which of the following actions are not affected by antimicrobial agents?
  1.    cell wall synthesis
  2.    nucleic acid synthesis
  3.    protein synthesis
  4.    capsule formation
 Discuss Question
Answer: Option D. -> capsule formation
Answer: (d).capsule formation
Question 82. How much time is required by spores of Clostridium botulinum to be killed by moist heat at 1200C?
  1.    2 hours
  2.    4 to 20 minutes
  3.    24 hours
  4.    6-7 hours
 Discuss Question
Answer: Option B. -> 4 to 20 minutes
Answer: (b).4 to 20 minutes
Question 83. Among the following which one is the most effective method of killing microorganisms?
  1.    High temperature
  2.    Low temperature
  3.    High temperature,high moisture
  4.    Low temperature,high moisture
 Discuss Question
Answer: Option C. -> High temperature,high moisture
Answer: (c).High temperature,high moisture
Question 84. Vegetative cells are much more sensitive to heat than are spores.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 85. Which of the following conditions are required for determination of thermal death time?
  1.    temperature is varied
  2.    time is fixed
  3.    temperature is fixed and time is varied
  4.    temperature is fixed and time is not selected
 Discuss Question
Answer: Option C. -> temperature is fixed and time is varied
Answer: (c).temperature is fixed and time is varied
Question 86. Which of the following apparatus is used to provide steam under regulated pressure?
  1.    autoclave
  2.    laminar air flow
  3.    incubator
  4.    hot oven
 Discuss Question
Answer: Option A. -> autoclave
Answer: (a).autoclave
Question 87. Which of the following instruments is used to perform tyndallization?
  1.    Autoclave
  2.    Steam Arnold
  3.    Gas oven
  4.    Incubator
 Discuss Question
Answer: Option B. -> Steam Arnold
Answer: (b).Steam Arnold
Question 88. Some amount of air is also essential inside the chamber of the autoclave.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 89. The general pressure at which the autoclave is operated is ___________
  1.    5 Psi
  2.    20 Psi
  3.    15 Psi
  4.    40 Psi
 Discuss Question
Answer: Option C. -> 15 Psi
Answer: (c).15 Psi
Question 90. Which of the following methods is used for killing microorganisms of only certain types and not all microorganisms?
  1.    Pasteurization
  2.    Incineration
  3.    Boiling water
  4.    Fractional Sterilization
 Discuss Question
Answer: Option A. -> Pasteurization
Answer: (a).Pasteurization

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