Treatment of drinking water by UV irradiation is effective at ________,but it does NOT remove ________.

Question

Quizplus · Accepted Answer

UV irradiation is effective at killing bacteria and eukaryotic pathogens by damaging their DNA, but it does not remove odor- and taste- altering organic compounds which may still be present in the water after treatment. Therefore, option A is the best choice. Option B is incorrect because UV irradiation is not always effective at killing viruses, depending on their size and shape. Option C is incorrect because UV irradiation does not remove organic compounds, but simply renders them harmless by preventing the growth of pathogens. Option D is incorrect because UV irradiation is not effective against all types of eukaryotic pathogens, such as protozoa.

Treatment of Drinking Water by UV Irradiation Is Effective at ________,But