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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following is/are vapour-phase disinfectant/s?

Formaldehyde
Ethylene oxide
Both (a) and (b)
None of these

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Physical and Chemical Agents
A(n)____is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.

antiseptic
bacteriostatic agent
sanitizer
disinfectant

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Physical and Chemical Agents
Which of the following is most effective for sterilizing mattresses and plastic petri plates?

Glutaraldehyde
Ethylene oxide
Chlorine
Ultraviolet radiation

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

sterilization
disinfection
antisepsis
none of these

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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
10
50

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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
autoclaving
none of these
tyndallization

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