Physical and Chemical Agents Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches? Ethylene oxide Halogens None of these Aldehydes Ethylene oxide Halogens None of these Aldehydes 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? 5 50 10 1 5 50 10 1 ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following does not kill endospores? Hot air sterilization Autoclave Pasteurization Incineration Hot air sterilization Autoclave Pasteurization Incineration ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is best used for long term storage of microbial samples when carried out properly? Storage on a petri plate at room temperature Storage in a freezer at ultra low temperatures (-70°C) Storage in a refrigerator on an agar slant Storage in a freezer at -10°C Storage on a petri plate at room temperature Storage in a freezer at ultra low temperatures (-70°C) Storage in a refrigerator on an agar slant Storage in a freezer at -10°C ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Media containing spores and thermolabile constituents are sterilized by tyndalization dry heat pasteurization UV radiation tyndalization dry heat pasteurization UV radiation ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following disinfectants act by disrupting microbial membranes? Cationic detergents Aldehydes Halogens Heavy metals Cationic detergents Aldehydes Halogens Heavy metals ANSWER DOWNLOAD EXAMIANS APP
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