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Physical and Chemical Agents

Physical and Chemical Agents
Bactericidal concentration of phenol is

0.25%
0.5%
1%
0.75%

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Physical and Chemical Agents
Which of the following material is sterilized by heating at 160°C in a hot air oven for one hour?

All-glass syringes
Oils and jellies
Swab sticks
All of these

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

none of these
sterilization
disinfection
antisepsis

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Physical and Chemical Agents
If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound?

1
5
50
10

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Physical and Chemical Agents
Iodophores are mixture of

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

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

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

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