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Physical and Chemical Agents

Physical and Chemical Agents
Which of the following material is sterilized by use of red heat?

Glass slides
Soiled dressings
Inoculating wires and loops
All-glass syringes

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

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

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

Anionic compounds
Amphoteric compounds
Non-ionic compounds
Cationic compounds

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Physical and Chemical Agents
Media containing spores and thermolabile constituents are sterilized by

UV radiation
dry heat
tyndalization
pasteurization

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

disinfectant
bacteriostatic agent
sanitizer
antiseptic

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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

decimal reduction time
F value
thermal death point
thermal death temperature

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