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Physical and Chemical Agents

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

Halogens
Heavy metals
Aldehydes
Cationic detergents

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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

disinfection
sterilization
pasteurization
antisepsis

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Physical and Chemical Agents
Iodophores are mixture of

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

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Physical and Chemical Agents
Which of the following is sterilized with the help of glutaraldehyde?

Cystoscopes
All of these
Thermometers
Bronchoscopes

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

Ethylene oxide
Glutaraldehyde
Chlorine
Ultraviolet radiation

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Physical and Chemical Agents
Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have

high concentration of solutes
insufficient nutrients
low pH
toxic alkaline chemicals

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