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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following does not kill endospores?

Incineration
Pasteurization
Autoclave
Hot air sterilization

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

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

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Physical and Chemical Agents
Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour?

All-glass syringes
Swab sticks
All of these
Oils and jellies

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Physical and Chemical Agents
The time required to kill 90% of the microorganisms in a sample at a specific temperature is the

D value
thermal death point
F value
decimal reduction time

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

freeze-drying
osmosis
filtration
desiccation

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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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