Physical and Chemical Agents Which of the following has most heat resistant spores? Clostridium histolyticum Bacillus stearothermophilus Clostridium perfringens Bacillus cereus Clostridium histolyticum Bacillus stearothermophilus Clostridium perfringens Bacillus cereus ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following is bactericidal? Freeze-drying Deep freezing Ionizing radiation Membrane filtration Freeze-drying Deep freezing Ionizing radiation Membrane filtration 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 F value D value decimal reduction time thermal death point F value D value decimal reduction time thermal death point ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Preservation of foods by using salts and sugars works by lowering osmotic pressure creating a hypertonic environment raising pH creating a hypotonic environment lowering osmotic pressure creating a hypertonic environment raising pH creating a hypotonic environment ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which disinfectant would be most effective against Staphylococcus found in a blood spill? Cetylpyridinium chloride Hexachlorophene Phenol None of these Cetylpyridinium chloride Hexachlorophene Phenol None of these ANSWER DOWNLOAD EXAMIANS APP
Physical and Chemical Agents Which of the following methods will not sterilize? 100°C boiling water for 30 minutes 121°C at 15 lb/in pressure for 15 to 20 minutes Dry heat at 171°C for 1 to 2 hours Aqueous glutaraldehyde for 10 hours 100°C boiling water for 30 minutes 121°C at 15 lb/in pressure for 15 to 20 minutes Dry heat at 171°C for 1 to 2 hours Aqueous glutaraldehyde for 10 hours ANSWER DOWNLOAD EXAMIANS APP
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