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Physical and Chemical Agents

Physical and Chemical Agents
The time required to kill 90% of the microorganisms in a sample at a specific temperature is the

D value
F value
decimal reduction time
thermal death point

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Physical and Chemical Agents
Which of the following items could be sterilized by dry heat sterilization?

Glass pipettes
Intravenous (IV) solution
Plastic IV bags
rubber gloves

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Physical and Chemical Agents
Milk is pasteurized in batch method by keeping it at

63°C for 30 minutes
73°C for 30 minutes
72°C for 6 minutes
72°C for 60 seconds

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

Plastic syringes
Canulas
None of these
Catheters

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Physical and Chemical Agents
Steam exposure of a material at 100°C for 20 minutes for three consecutive days is known as

autoclaving
inspissation
tyndallization
none of these

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

disinfection
antisepsis
sterilization
none of these

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