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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following material is sterilized by use of red heat?

Soiled dressings
Glass slides
All-glass syringes
Inoculating wires and loops

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

sterilization
disinfection
none of these
antisepsis

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Physical and Chemical Agents
Which of the following is bactericidal?

Deep freezing
Ionizing radiation
Freeze-drying
Membrane filtration

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Physical and Chemical Agents
The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the

thermal death temperature
decimal reduction time
thermal death point
thermal death time

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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
high concentration of solutes
insufficient nutrients
low pH

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Physical and Chemical Agents
Which of the following is best to sterilize heat labile solutions?

Dry heat
Membrane filtration
Autoclave
Pasteurization

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