Physical and Chemical Agents Which of the following is/are vapour-phase disinfectant/s? None of these Ethylene oxide Formaldehyde Both (a) and (b) None of these Ethylene oxide Formaldehyde Both (a) and (b) 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 refrigerator on an agar slant Storage in a freezer at ultra low temperatures (-70°C) Storage in a freezer at -10°C Storage on a petri plate at room temperature Storage in a refrigerator on an agar slant Storage in a freezer at ultra low temperatures (-70°C) Storage in a freezer at -10°C ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which disinfectant was the most effective against Salmonella"? Cetylpyridinium chloride Phenol Merthiolate Hexachlorophene Cetylpyridinium chloride Phenol Merthiolate Hexachlorophene ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Bactericidal concentration of phenol is 0.5% 1% 0.25% 0.75% 0.5% 1% 0.25% 0.75% ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following describes the effect of ionizing radiation on microbes? Changes the 3-dimensional structure of proteins to a 2-dimen-sional form None of these Induces electrons and protons to jump out of the molecules of the microbe Substantially decreases enzymatic activity, slowing microbial reproduction Changes the 3-dimensional structure of proteins to a 2-dimen-sional form None of these Induces electrons and protons to jump out of the molecules of the microbe Substantially decreases enzymatic activity, slowing microbial reproduction ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following has most heat resistant spores? Bacillus stearothermophilus Clostridium perfringens Clostridium histolyticum Bacillus cereus Bacillus stearothermophilus Clostridium perfringens Clostridium histolyticum Bacillus cereus ANSWER DOWNLOAD EXAMIANS APP
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