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Physical and Chemical Agents

Physical and Chemical Agents
Ethylene oxide is used to destroy or kill which of the following microbes?

Fungi
Bacteria
All of these
Spores

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

Ethylene oxide
Ultraviolet radiation
Chlorine
Glutaraldehyde

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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

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

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Physical and Chemical Agents
Which of the following tests is designed to simulate the natural conditions under which the disinfectants are used in hospitals?

None of these
Phenol coefficient test
Capacity test
Minimum inhibitory concentration test

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

Merthiolate
Phenol
Hexachlorophene
Cetylpyridinium chloride

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Physical and Chemical Agents
Which of the following is not a disinfectant containing a heavy metal?

Copper sulfate
Silver nitrate
Mercurochrome
Chlorine

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