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Physical and Chemical Agents

Physical and Chemical Agents
The process of making an object free from living organisms including bacterial and fungal spores and viruses is known as

pasteurization
antisepsis
disinfection
sterilization

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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

tyndallization
none of these
inspissation
autoclaving

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Physical and Chemical Agents
If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound?

10
1
50
5

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

Iodine
Phenol
Chlorine
Alcohol

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

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

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

desiccation
freeze-drying
osmosis
filtration

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