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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following substances can sterilize?

Ethylene oxide
Chlorine
Alcohol
Cetylpyridinium chloride

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Physical and Chemical Agents
One drawback to the use of ultraviolet light as a sterilizing agent is its

failure to bacterial spores
failure to kill microbes located in the center of an object
failure to kill microbes in a closed environment
failure to kill bacteria

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Physical and Chemical Agents
Which of the following items could be sterilized by dry heat sterilization?

rubber gloves
Glass pipettes
Intravenous (IV) solution
Plastic IV bags

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Physical and Chemical Agents
For sterilization of which material gamma rays can be used?

Canulas
None of these
Plastic syringes
Catheters

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Physical and Chemical Agents
Milk is pasteurized in batch method by keeping it at

63°C for 30 minutes
72°C for 6 minutes
73°C for 30 minutes
72°C for 60 seconds

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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 time
decimal reduction time
thermal death temperature
thermal death point

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