8. Which disinfectant would be most effective against Staphylococcus found in a blood spill?
A.Phenol
B.Cetylpyridinium chloride
C.Hexachlorophene
D.None of these
9. Which of the following substances can sterilize?
A.Alcohol
B.Cetylpyridinium chloride
C.Ethylene oxide
D.Chlorine
10. Milk is pasteurized in batch method by keeping it at
A.63°C for 30 minutes
B.72°C for 60 seconds
C.73°C for 30 minutes
D.72°C for 6 minutes
11. Preservation of foods by using salts and sugars works by
A.raising pH
B.lowering osmotic pressure
C.creating a hypertonic environment
D.creating a hypotonic environment
12. Which of the following items could be sterilized by dry heat sterilization?
A.Intravenous (IV) solution
B.Plastic IV bags
C.Glass pipettes
D.rubber gloves
13. Which of the following does not kill endospores?
A.Autoclave
B.Incineration
C.Hot air sterilization
D.Pasteurization
14. Which disinfectant was the most effective against Salmonella"?
A.Phenol
B.Cetylpyridinium chloride
C.Hexachlorophene
D.Merthiolate
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