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 methods will not sterilize? Dry heat at 171°C for 1 to 2 hours 121°C at 15 lb/in pressure for 15 to 20 minutes 100°C boiling water for 30 minutes Aqueous glutaraldehyde for 10 hours Dry heat at 171°C for 1 to 2 hours 121°C at 15 lb/in pressure for 15 to 20 minutes 100°C boiling water for 30 minutes Aqueous glutaraldehyde for 10 hours ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following material is sterilized by use of red heat? Inoculating wires and loops All-glass syringes Glass slides Soiled dressings Inoculating wires and loops All-glass syringes Glass slides Soiled dressings ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Steam exposure of a material at 100°C for 20 minutes for three consecutive days is known as tyndallization inspissation none of these autoclaving tyndallization inspissation none of these autoclaving ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is/are vapour-phase disinfectant/s? None of these Both (a) and (b) Ethylene oxide Formaldehyde None of these Both (a) and (b) Ethylene oxide Formaldehyde 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 temperature F value thermal death point decimal reduction time thermal death temperature F value thermal death point ANSWER DOWNLOAD EXAMIANS APP
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