Chapter 8

Question 1

do kill many microbes, but they are too irritating and corrosive.

Answer 1

Acids and alkalis

Question 2

are strongly active against bacteria and viruses and remain active in organic material. They are most suitable on smooth surface.

Answer 2

Quaternary ammonium compound

Question 3

are rather popular. They kill nearly all bacteria and viruses in a relatively short time, are soluble in water, not toxic and not expensive.

Answer 3

chlorine-based disinfectants

Question 4

are more active in organic material, but their disinfecting activity is not as high, especially not against viruses. It is not toxic, non-irritant and has a pleasant color and odor. It is favored for hatcheries.

Answer 4

Phenols

Question 5

a very effective disinfectant, can be applied in various ways. It is not corrosive, but rather irritant and it should be applied very carefully due to its toxicity.

Answer 5

Formaldehyde gas

Question 6

Live vaccine can be stored in the dark at _ degree celsius

Answer 6

4’C