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Microbiology Objective Questions { Physical and Chemical Agents }

43. Which of the following is/are vapour-phase disinfectant/s?
B.Ethylene oxide
C.Both (a) and (b)
D.None of these
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44. Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have
A.insufficient nutrients
B.low pH
C.high concentration of solutes
D.toxic alkaline chemicals
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45.  Iodophores are mixture of
A.iodine and aldehydes
B.iodine and surface active agents
C.iodine and alcohols
D.iodine and phenols
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46.  Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches?
B.Ethylene oxide
D.None of these
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47. Complete destruction of the microorganisms is commonly known as
D.none of these
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