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Physical and Chemical Agents

Physical and Chemical Agents
For sterilization of which material gamma rays can be used?

Catheters
None of these
Canulas
Plastic syringes

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Physical and Chemical Agents
Which of the following skin disinfectant(s) is/are most frequently used?

Isopropyl alcohol
Ethyl alcohol
Both (a) and (b)
none of these

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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
pasteurization
antisepsis
sterilization

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Physical and Chemical Agents
Which disinfectant was the most effective against Salmonella"?

Cetylpyridinium chloride
Merthiolate
Phenol
Hexachlorophene

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

filtration
freeze-drying
osmosis
desiccation

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

toxic alkaline chemicals
low pH
high concentration of solutes
insufficient nutrients

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