Discussion
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- Question
Which of the following was the first widely used antiseptic and disinfectant?
Options- A. Chlorine
- B. Phenol
- C. Iodine
- D. Alcohol
- Correct Answer
- Phenol
- 1. Which disinfectant would be most effective against Staphylococcus found in a blood spill?
Options- A. Phenol
- B. Cetylpyridinium chloride
- C. Hexachlorophene
- D. None of these Discuss
- 2. Which of the following material is sterilized by use of red heat?
Options- A. Soiled dressings
- B. Inoculating wires and loops
- C. Glass slides
- D. All-glass syringes Discuss
- 3. Media containing spores and thermolabile constituents are sterilized by
Options- A. pasteurization
- B. UV radiation
- C. dry heat
- D. tyndalization Discuss
- 4. Which of the following articles can be sterilized in an autoclave?
Options- A. Gloves
- B. Culture media
- C. Dressing material
- D. All of these Discuss
- 5. Which of the following methods will not sterilize?
Options- A. Aqueous glutaraldehyde for 10 hours
- B. Dry heat at 171°C for 1 to 2 hours
- C. 121°C at 15 lb/in pressure for 15 to 20 minutes
- D. 100°C boiling water for 30 minutes Discuss
- 6. 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?
Options- A. 1
- B. 5
- C. 10
- D. 50 Discuss
- 7. A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.
Options- A. bacteriostatic agent
- B. sanitizer
- C. disinfectant
- D. antiseptic Discuss
- 8. Which of the following describes the effect of ionizing radiation on microbes?
Options- A. Changes the 3-dimensional structure of proteins to a 2-dimen-sional form
- B. Substantially decreases enzymatic activity, slowing microbial reproduction
- C. Induces electrons and protons to jump out of the molecules of the microbe
- D. None of the above Discuss
- 9. The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the
Options- A. decimal reduction time
- B. thermal death point
- C. thermal death temperature
- D. thermal death time Discuss
- 10. Which of the following is not a disinfectant containing a heavy metal?
Options- A. Silver nitrate
- B. Mercurochrome
- C. Copper sulfate
- D. Chlorine Discuss
Physical and Chemical Agents problems
Search Results
Correct Answer: None of these
Correct Answer: Inoculating wires and loops
Correct Answer: UV radiation
Correct Answer: All of these
Correct Answer: 100°C boiling water for 30 minutes
Correct Answer: 10
Correct Answer: antiseptic
Correct Answer: Induces electrons and protons to jump out of the molecules of the microbe
Correct Answer: thermal death point
Correct Answer: Chlorine
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