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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following was the first widely used antiseptic and disinfectant?

Chlorine
Alcohol
Phenol
Iodine

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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

decimal reduction time
F value
thermal death point
D value

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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
thermal death point
F value

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Physical and Chemical Agents
Which is the most important surface active disinfectants?

Non-ionic compounds
Amphoteric compounds
Cationic compounds
Anionic compounds

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Physical and Chemical Agents
One drawback to the use of ultraviolet light as a sterilizing agent is its

failure to kill microbes located in the center of an object
failure to kill bacteria
failure to bacterial spores
failure to kill microbes in a closed environment

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

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

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