41. Which of the following material is sterilized by the use of red heat?
A. Soiled dressings
B. Inoculating wires and loops
C. Glass slides
D. All-glass syringes
42. Which of the following methods will not sterilize?
A. Aqueous glutaraldehyde for 10 hours
B. Dry heat at 171°C for 1 to 2 hours
C. 121°C at 15 lb/in pressure for 15 to 20 minutes
D. 100°C boiling water for 30 minutes
43. Which of the following is/are vapor-phase disinfectant/s?
A. Formaldehyde
B. Ethylene oxide
C. Both (a) and (b)
D. None of these
44. Sweet and salty foods frequently don’t require refrigeration to prevent spoilage because they have
A. insufficient nutrients
B. low pH
C. high concentration of solutes
D. toxic alkaline chemicals
45. Ionophores are mixture of
A. iodine and aldehydes
B. iodine and surface active agents
C. iodine and alcohols
D. iodine and phenols
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