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Physical and Chemical Agents

Physical and Chemical Agents
Which disinfectant was the most effective against Salmonella"?

Phenol
Cetylpyridinium chloride
Hexachlorophene
Merthiolate

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Physical and Chemical Agents
Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have

insufficient nutrients
toxic alkaline chemicals
high concentration of solutes
low pH

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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

inspissation
tyndallization
autoclaving
none of these

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Physical and Chemical Agents
Which of the following substances can sterilize?

Cetylpyridinium chloride
Alcohol
Ethylene oxide
Chlorine

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

Plastic syringes
None of these
Catheters
Canulas

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Physical and Chemical Agents
Iodophores are mixture of

iodine and alcohols
iodine and surface active agents
iodine and aldehydes
iodine and phenols

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