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Physical and Chemical Agents

Physical and Chemical Agents
All of the following are sporicidal except

glutaraldehyde
ethylene oxide
alcohol
formaldehyde

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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
Oils and jellies
Swab sticks
All of these

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Physical and Chemical Agents
Which of the following is bactericidal?

Ionizing radiation
Deep freezing
Freeze-drying
Membrane filtration

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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
decimal reduction time
thermal death point
F value

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

antisepsis
disinfection
none of these
sterilization

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

Aldehydes
Cationic detergents
Halogens
Heavy metals

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