Physical and Chemical Agents Which of the following skin disinfectant(s) is/are most frequently used? Both (a) and (b) Isopropyl alcohol Ethyl alcohol none of these Both (a) and (b) Isopropyl alcohol Ethyl alcohol none of these ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have low pH toxic alkaline chemicals insufficient nutrients high concentration of solutes low pH toxic alkaline chemicals insufficient nutrients high concentration of solutes ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which is the most important surface active disinfectants? Anionic compounds Non-ionic compounds Cationic compounds Amphoteric compounds Anionic compounds Non-ionic compounds Cationic compounds Amphoteric compounds ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents The time required to kill 90% of the microorganisms in a sample at a specific temperature is the F value D value decimal reduction time thermal death point F value D value decimal reduction time thermal death point ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Ethylene oxide is used to destroy or kill which of the following microbes? All of these Spores Bacteria Fungi All of these Spores Bacteria Fungi ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following describes the effect of ionizing radiation on microbes? Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Induces electrons and protons to jump out of the molecules of the microbe None of these Substantially decreases enzymatic activity, slowing microbial reproduction Changes the 3-dimensional structure of proteins to a 2-dimen-sional form Induces electrons and protons to jump out of the molecules of the microbe None of these Substantially decreases enzymatic activity, slowing microbial reproduction ANSWER DOWNLOAD EXAMIANS APP
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