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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

antisepsis
pasteurization
sterilization
disinfection

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

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

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

Chlorine
Copper sulfate
Mercurochrome
Silver nitrate

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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 temperature
thermal death time
thermal death point

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Physical and Chemical Agents
Preservation of foods by using salts and sugars works by

lowering osmotic pressure
creating a hypertonic environment
creating a hypotonic environment
raising pH

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Physical and Chemical Agents
Which of the following is/are vapour-phase disinfectant/s?

Ethylene oxide
Both (a) and (b)
None of these
Formaldehyde

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