Physical and Chemical Agents Which of the following is most effective for sterilizing mattresses and plastic petri plates? Glutaraldehyde Ultraviolet radiation Ethylene oxide Chlorine Glutaraldehyde Ultraviolet radiation Ethylene oxide Chlorine ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents One drawback to the use of ultraviolet light as a sterilizing agent is its failure to bacterial spores failure to kill microbes in a closed environment failure to kill bacteria failure to kill microbes located in the center of an object failure to bacterial spores failure to kill microbes in a closed environment failure to kill bacteria failure to kill microbes located in the center of an object ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is bactericidal? Membrane filtration Ionizing radiation Deep freezing Freeze-drying Membrane filtration Ionizing radiation Deep freezing Freeze-drying ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which disinfectant would be most effective against Staphylococcus found in a blood spill? Hexachlorophene Cetylpyridinium chloride None of these Phenol Hexachlorophene Cetylpyridinium chloride None of these Phenol ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Milk is pasteurized in batch method by keeping it at 63°C for 30 minutes 72°C for 60 seconds 72°C for 6 minutes 73°C for 30 minutes 63°C for 30 minutes 72°C for 60 seconds 72°C for 6 minutes 73°C for 30 minutes 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 in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at -10°C Storage in a freezer at ultra low temperatures (-70°C) Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at -10°C Storage in a freezer at ultra low temperatures (-70°C) ANSWER DOWNLOAD EXAMIANS APP
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