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Physical and Chemical Agents

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

Ethylene oxide
Glutaraldehyde
Ultraviolet radiation
Chlorine

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Physical and Chemical Agents
Complete destruction of the microorganisms is commonly known as

disinfection
none of these
antisepsis
sterilization

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

Hexachlorophene
Phenol
Merthiolate
Cetylpyridinium chloride

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Physical and Chemical Agents
The organisms retained in the fluids filtered by Seitz filter is

Proteus
None of these
Staphylococcus
Clostridium

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Physical and Chemical Agents
The time in minutes at a specific temperature needed to kill a population of cells is the

thermal death temperature
decimal reduction time
F value
thermal death point

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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?

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

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