Question

9.) In evaluating disinfectant effectiveness, the use-dilution method involves which of the following methods of assessment? a.) zone of inhibition b.) two of these are correct c.) clearing zones surrounding discs d.) turbidity 10.) Which of the following is/are true of ethanol as a disinfectant? a.) two of these are correct b.) 70% ethanol is more effective than 91% ethanol c.) 91% ethanol evaporates quickly and reduces time of exposure d.) 91% ethanol is more effective than 70% ethanol 11.) Some chemical agents form micelle structures to carry away insoluble substances in water. Which of the following are capable of forming micelles? a.) Benzalkonium chloride b.) halogens c.) two of these are correct d.) detergent 12.) Which of the following is/are true of hypochlorites (ClO-)? a.) it is classified as a halogen agent b.) it is used to denature proteins c.) all of these are true d.) it is the active ingredient in household bleach

          9.) In evaluating disinfectant effectiveness, the use-dilution method involves which of the following methods of assessment?
a.) zone of inhibition
b.) two of these are correct
c.) clearing zones surrounding discs
d.) turbidity
10.) Which of the following is/are true of ethanol as a disinfectant?
a.) two of these are correct
b.) 70% ethanol is more effective than 91% ethanol
c.) 91% ethanol evaporates quickly and reduces time of exposure
d.) 91% ethanol is more effective than 70% ethanol
11.) Some chemical agents form micelle structures to carry away insoluble substances in water. Which of the following are capable of forming micelles?
a.) Benzalkonium chloride
b.) halogens
c.) two of these are correct
d.) detergent
12.) Which of the following is/are true of hypochlorites (ClO-)?
a.) it is classified as a halogen agent
b.) it is used to denature proteins
c.) all of these are true
d.) it is the active ingredient in household bleach

Added by Gema B.

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