Physical and Chemical Agents Which of the following has most heat resistant spores? Bacillus stearothermophilus Bacillus cereus Clostridium perfringens Clostridium histolyticum Bacillus stearothermophilus Bacillus cereus Clostridium perfringens Clostridium histolyticum ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents The time in minutes at a specific temperature needed to kill a population of cells is the thermal death temperature thermal death point F value decimal reduction time thermal death temperature thermal death point F value decimal reduction time ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following disinfectants act by disrupting microbial membranes? Aldehydes Heavy metals Cationic detergents Halogens Aldehydes Heavy metals Cationic detergents Halogens ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following skin disinfectant(s) is/are most frequently used? Isopropyl alcohol Ethyl alcohol Both (a) and (b) none of these Isopropyl alcohol Ethyl alcohol Both (a) and (b) none of these ANSWER DOWNLOAD EXAMIANS APP
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 10 5 50 1 10 5 50 ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Ethylene oxide is used to destroy or kill which of the following microbes? Bacteria Fungi All of these Spores Bacteria Fungi All of these Spores ANSWER DOWNLOAD EXAMIANS APP
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