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- Question
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
- Correct Answer
- 100°C boiling water for 30 minutes
- 1. Which of the following skin disinfectant(s) is/are most frequently used?
Options- A. Isopropyl alcohol
- B. Ethyl alcohol
- C. Both (a) and (b)
- D. none of these Discuss
- 2. Which of the following disinfectants act by disrupting microbial membranes?
Options- A. Cationic detergents
- B. Halogens
- C. Heavy metals
- D. Aldehydes Discuss
- 3. If a canning procedure is not properly followed, which type of microbe is most likely to grow in the canned food?
Options- A. Obligate Aerobe
- B. Acidophile
- C. Mesophile
- D. Obligate Anaerobe Discuss
- 4. Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches?
Options- A. Aldehydes
- B. Ethylene oxide
- C. Halogens
- D. None of these Discuss
- 5. Which of the following is best used for long term storage of microbial samples when carried out properly?
Options- A. Storage in a freezer at -10°C
- B. Storage in a freezer at ultra low temperatures (-70°C)
- C. Storage in a refrigerator on an agar slant
- D. Storage on a petri plate at room temperature Discuss
- 6. 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
- 7. Media containing spores and thermolabile constituents are sterilized by
Options- A. pasteurization
- B. UV radiation
- C. dry heat
- D. tyndalization Discuss
- 8. 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
- 9. 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
- 10. Which of the following was the first widely used antiseptic and disinfectant?
Options- A. Chlorine
- B. Phenol
- C. Iodine
- D. Alcohol Discuss
Physical and Chemical Agents problems
Search Results
Correct Answer: Both (a) and (b)
Correct Answer: Cationic detergents
Correct Answer: Obligate Anaerobe
Correct Answer: Halogens
Correct Answer: Storage in a freezer at ultra low temperatures (-70°C)
Correct Answer: All of these
Correct Answer: UV radiation
Correct Answer: Inoculating wires and loops
Correct Answer: None of these
Correct Answer: Phenol
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