d. Virucide- Inactivates viruses e. Sterilant-Destroys all living microoeganisms

Question

d. Virucide- Inactivates viruses e. Sterilant-Destroys all living microoeganisms 43- All of the following substances are effective against non-envelopod viruses Except? 50% alcohol b. Ozone c. Chlorine d. Ethylene Oxide None of the answers is correct, all of these are equally effective agaimst 44 Which of the following results in lethal damage to nucleic acids? a. Heat b. Radiation c. Certain chemicals d. Heat & Radiation e. Heat, Radiation & some chemicals 45- All of the following are methods of food preservation except a. Desiccation c. Benzoic acid d. Ammonium compounds

Explanation / Answer

43) Option A is the right answer. Alcohol is ineffective against the non-enveloped virus which mainly consists of nucleic acids.

44) Option E is the right answer. Excessive heat can damage DNA, Radiation such as exposure to UV rays can cause mutation and damage DNA. Some chemicals act as mutagens and cause lethal damage to the DNA.

45. Option B is the right answer. Microwaves are used for cooking and to warm food items. It cannot be used for preservation.

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