Physical and Chemical Agents Which of the following is/are vapour-phase disinfectant/s? Both (a) and (b) Formaldehyde Ethylene oxide None of these Both (a) and (b) Formaldehyde Ethylene oxide None of these ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Preservation of foods by using salts and sugars works by creating a hypotonic environment lowering osmotic pressure creating a hypertonic environment raising pH creating a hypotonic environment lowering osmotic pressure creating a hypertonic environment raising pH 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 freezer at -10°C Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at ultra low temperatures (-70°C) Storage in a freezer at -10°C Storage in a refrigerator on an agar slant Storage on a petri plate at room temperature Storage in a freezer at ultra low temperatures (-70°C) ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Media containing spores and thermolabile constituents are sterilized by UV radiation pasteurization tyndalization dry heat UV radiation pasteurization tyndalization dry heat ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents One drawback to the use of ultraviolet light as a sterilizing agent is its failure to kill microbes located in the center of an object failure to kill microbes in a closed environment failure to bacterial spores failure to kill bacteria failure to kill microbes located in the center of an object failure to kill microbes in a closed environment failure to bacterial spores failure to kill bacteria 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 F value decimal reduction time thermal death temperature thermal death point F value decimal reduction time thermal death temperature thermal death point ANSWER DOWNLOAD EXAMIANS APP
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