Physical and Chemical Agents Milk is pasteurized in batch method by keeping it at 72°C for 6 minutes 73°C for 30 minutes 72°C for 60 seconds 63°C for 30 minutes 72°C for 6 minutes 73°C for 30 minutes 72°C for 60 seconds 63°C for 30 minutes 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 D value decimal reduction time F value thermal death point D value decimal reduction time F value thermal death point 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 -10°C Storage in a refrigerator on an agar slant Storage in a freezer at ultra low temperatures (-70°C) Storage on a petri plate at room temperature Storage in a freezer at -10°C Storage in a refrigerator on an agar slant Storage in a freezer at ultra low temperatures (-70°C) ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is not a disinfectant containing a heavy metal? Chlorine Silver nitrate Mercurochrome Copper sulfate Chlorine Silver nitrate Mercurochrome Copper sulfate ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Ethylene oxide is used to destroy or kill which of the following microbes? Bacteria All of these Spores Fungi Bacteria All of these Spores Fungi 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 decimal reduction time thermal death point F value thermal death temperature decimal reduction time thermal death point F value thermal death temperature ANSWER DOWNLOAD EXAMIANS APP
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