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MCQs

Total Questions : 99 | Page 8 of 10 pages
Question 71. . One drawback to the use of ultraviolet light as a sterilizing agent is its
  1.    failure to kill bacteria
  2.    failure to bacterial spores
  3.    failure to kill microbes in a closed environment
  4.    failure to kill microbes located in the center of an object
 Discuss Question
Answer: Option D. -> failure to kill microbes located in the center of an object
Question 72. . If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound?
  1.    1
  2.    5
  3.    10
  4.    50
 Discuss Question
Answer: Option C. -> 10
Question 73. . A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.
  1.    bacteriostatic agent
  2.    sanitizer
  3.    disinfectant
  4.    antiseptic
 Discuss Question
Answer: Option D. -> antiseptic
Question 74. . Which of the following was the first widely used antiseptic and disinfectant?
  1.    Chlorine
  2.    Phenol
  3.    Iodine
  4.    Alcohol
 Discuss Question
Answer: Option B. -> Phenol
Question 75. . Microbes can be removed from a liquid solution by the process of
  1.    filtration
  2.    freeze-drying
  3.    osmosis
  4.    desiccation
 Discuss Question
Answer: Option A. -> filtration
Question 76. .  Which of the following is bactericidal?
  1.    Membrane filtration
  2.    Ionizing radiation
  3.    Freeze-drying
  4.    Deep freezing
 Discuss Question
Answer: Option B. -> Ionizing radiation
Question 77. . The organisms retained in the fluids filtered by Seitz filter is
  1.    Proteus
  2.    Staphylococcus
  3.    Clostridium
  4.    None of thes
 Discuss Question
Answer: Option D. -> None of thes
Question 78. . For sterilization of which material gamma rays can be used?
  1.    Catheters
  2.    Plastic syringes
  3.    Canulas
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 79. . Which of the following process can be efficiently carried out by incineration?
  1.    Sterilization of scalpel blades and needles
  2.    Sterilization of all glass syringes
  3.    Sterilization of points of forceps
  4.    Destruction of contaminated materials
 Discuss Question
Answer: Option D. -> Destruction of contaminated materials
Question 80. . Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour?
  1.    Swab sticks
  2.    All-glass syringes
  3.    Oils and jellies
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these

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