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MCQs

Total Questions : 99 | Page 3 of 10 pages
Question 21. A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.
  1.    antiseptic
  2.    disinfectant
  3.    bacteriostatic agent
  4.    sanitizer
 Discuss Question
Answer: Option A. -> antiseptic
Question 22. The process of making an object free from living organisms including bacterial and fungal spores and viruses is known as
  1.    antisepsis
  2.    disinfection
  3.    sterilization
  4.    pasteurization
 Discuss Question
Answer: Option C. -> sterilization
Question 23. Media containing spores and thermolabile constituents are sterilized by
  1.    tyndalization
  2.    UV radiation
  3.    pasteurization
  4.    dry heat
 Discuss Question
Answer: Option B. -> UV radiation
Question 24. One drawback to the use of ultraviolet light as a sterilizing agent is its
  1.    failure to kill microbes in a closed environment
  2.    failure to kill microbes located in the center of an object
  3.    failure to kill bacteria
  4.    failure to bacterial spores
 Discuss Question
Answer: Option B. -> failure to kill microbes located in the center of an object
Question 25. Ethylene oxide is used to destroy or kill which of the following microbes?
  1.    All of these
  2.    Bacteria
  3.    Spores
  4.    Fungi
 Discuss Question
Answer: Option A. -> All of these
Question 26. Which of the following process can be efficiently carried out by incineration?
  1.    Sterilization of all glass syringes
  2.    Sterilization of points of forceps
  3.    Destruction of contaminated materials
  4.    Sterilization of scalpel blades and needles
 Discuss Question
Answer: Option C. -> Destruction of contaminated materials
Question 27. Microbes can be removed from a liquid solution by the process of
  1.    osmosis
  2.    freeze-drying
  3.    filtration
  4.    desiccation
 Discuss Question
Answer: Option C. -> filtration
Question 28. Which of the following was the first widely used antiseptic and disinfectant?
  1.    Alcohol
  2.    Chlorine
  3.    Phenol
  4.    Iodine
 Discuss Question
Answer: Option C. -> Phenol
Question 29. 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.    50
  3.    5
  4.    10
 Discuss Question
Answer: Option D. -> 10
Question 30. Which of the following is bactericidal?
  1.    Ionizing radiation
  2.    Membrane filtration
  3.    Deep freezing
  4.    Freeze-drying
 Discuss Question
Answer: Option A. -> Ionizing radiation

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