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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following articles can be sterilized in an autoclave?

Dressing material
Gloves
All of these
Culture media

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Physical and Chemical Agents
Which of the following methods will not sterilize?

100°C boiling water for 30 minutes
Aqueous glutaraldehyde for 10 hours
121°C at 15 lb/in pressure for 15 to 20 minutes
Dry heat at 171°C for 1 to 2 hours

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Physical and Chemical Agents
Which of the following is most effective for sterilizing mattresses and plastic petri plates?

Ultraviolet radiation
Glutaraldehyde
Chlorine
Ethylene oxide

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Physical and Chemical Agents
Which is the most important surface active disinfectants?

Anionic compounds
Cationic compounds
Non-ionic compounds
Amphoteric compounds

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Physical and Chemical Agents
Which of the following disinfectants act by disrupting microbial membranes?

Cationic detergents
Halogens
Aldehydes
Heavy metals

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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
sterilization
antisepsis
disinfection

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