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 -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) Storage in a refrigerator on an agar slant ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is not a disinfectant containing a heavy metal? Chlorine Mercurochrome Copper sulfate Silver nitrate Chlorine Mercurochrome Copper sulfate Silver nitrate ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is/are vapour-phase disinfectant/s? Formaldehyde Ethylene oxide Both (a) and (b) None of these Formaldehyde Ethylene oxide Both (a) and (b) None of these ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Milk is pasteurized in batch method by keeping it at 72°C for 60 seconds 72°C for 6 minutes 63°C for 30 minutes 73°C for 30 minutes 72°C for 60 seconds 72°C for 6 minutes 63°C for 30 minutes 73°C for 30 minutes ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following items could be sterilized by dry heat sterilization? Glass pipettes Intravenous (IV) solution rubber gloves Plastic IV bags Glass pipettes Intravenous (IV) solution rubber gloves Plastic IV bags 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 5 10 50 1 5 10 50 ANSWER DOWNLOAD EXAMIANS APP
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