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Physical and Chemical Agents

Physical and Chemical Agents
Which disinfectant was the most effective against Salmonella"?

Cetylpyridinium chloride
Phenol
Hexachlorophene
Merthiolate

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Physical and Chemical Agents
All of the following are sporicidal except

alcohol
ethylene oxide
formaldehyde
glutaraldehyde

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Physical and Chemical Agents
Steam exposure of a material at 100°C for 20 minutes for three consecutive days is known as

inspissation
autoclaving
none of these
tyndallization

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Physical and Chemical Agents
Which of the following skin disinfectant(s) is/are most frequently used?

Ethyl alcohol
Isopropyl alcohol
Both (a) and (b)
none of these

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Physical and Chemical Agents
Complete destruction of the microorganisms is commonly known as

disinfection
none of these
sterilization
antisepsis

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Physical and Chemical Agents
Which of the following is most effective for sterilizing mattresses and plastic petri plates?

Ultraviolet radiation
Ethylene oxide
Glutaraldehyde
Chlorine

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