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Physical and Chemical Agents

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

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

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Physical and Chemical Agents
Which of the following process can be efficiently carried out by incineration?

Sterilization of points of forceps
Sterilization of scalpel blades and needles
Sterilization of all glass syringes
Destruction of contaminated materials

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Physical and Chemical Agents
All of the following are sporicidal except

glutaraldehyde
alcohol
formaldehyde
ethylene oxide

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Physical and Chemical Agents
Which of the following methods will not sterilize?

Aqueous glutaraldehyde for 10 hours
Dry heat at 171°C for 1 to 2 hours
100°C boiling water for 30 minutes
121°C at 15 lb/in pressure for 15 to 20 minutes

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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 point
decimal reduction time
thermal death temperature
thermal death time

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

Clostridium
None of these
Proteus
Staphylococcus

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