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Physical and Chemical Agents

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

disinfection
sterilization
none of these
antisepsis

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Physical and Chemical Agents
The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the

thermal death temperature
decimal reduction time
thermal death point
thermal death time

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

Merthiolate
Hexachlorophene
Cetylpyridinium chloride
Phenol

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Physical and Chemical Agents
Which of the following does not kill endospores?

Incineration
Hot air sterilization
Pasteurization
Autoclave

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Physical and Chemical Agents
Media containing spores and thermolabile constituents are sterilized by

tyndalization
dry heat
pasteurization
UV radiation

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

Ethylene oxide
Glutaraldehyde
Chlorine
Ultraviolet radiation

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