PHYSICAL AND CHEMICAL AGENTS QUIZ

The time required to kill 90% of the microorganisms in a sample at a specific temperature is the

D value

F value

decimal reduction time

thermal death point

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is/are vapour-phase disinfectant/s?

Ethylene oxide

Formaldehyde

None of these

Both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following process can be efficiently carried out by incineration?

Destruction of contaminated materials

Sterilization of all glass syringes

Sterilization of points of forceps

Sterilization of scalpel blades and needles

TRUE ANSWER : ?
YOUR ANSWER : ?

Iodophores are mixture of

iodine and aldehydes

iodine and alcohols

iodine and surface active agents

iodine and phenols

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following articles can be sterilized in an autoclave?

All of these

Gloves

Culture media

Dressing material

TRUE ANSWER : ?
YOUR ANSWER : ?

Which disinfectant was the most effective against Salmonella"?

Phenol

Hexachlorophene

Cetylpyridinium chloride

Merthiolate

TRUE ANSWER : ?
YOUR ANSWER : ?

If a canning procedure is not properly followed, which type of microbe is most likely to grow in the canned food?

Acidophile

Mesophile

Obligate Anaerobe

Obligate Aerobe

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following methods will not sterilize?

Aqueous glutaraldehyde for 10 hours

Dry heat at 171°C for 1 to 2 hours

100°C boiling water for 30 minutes

121°C at 15 lb/in pressure for 15 to 20 minutes

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is sterilized with the help of glutaraldehyde?

All of these

Bronchoscopes

Thermometers

Cystoscopes

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has most heat resistant spores?

Clostridium perfringens

Bacillus cereus

Bacillus stearothermophilus

Clostridium histolyticum

TRUE ANSWER : ?
YOUR ANSWER : ?

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