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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following was the first widely used antiseptic and disinfectant?

Chlorine
Phenol
Iodine
Alcohol

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Physical and Chemical Agents
Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches?

Ethylene oxide
Aldehydes
Halogens
None of these

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Physical and Chemical Agents
Microbes can be removed from a liquid solution by the process of

freeze-drying
osmosis
desiccation
filtration

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Physical and Chemical Agents
Iodophores are mixture of

iodine and surface active agents
iodine and alcohols
iodine and aldehydes
iodine and phenols

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

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

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

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

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