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In order to control the water pollution of pathogenic bacteria, viruses and parasites, how many categories are there?

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In order to control the water pollution of pathogenic bacteria, viruses and parasites, how many categories are there?

(a) One

(b) Two

(c) Three

(d) Four

I have been asked this question during an online interview.

I'd like to ask this question from Control Measures of Water Pollution topic in chapter Environmental Pollution of Energy Management

1 Answer

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Best answer
Correct choice is (c) Three

Easiest explanation: The three broad categories for control of pathogenic bacteria, viruses and parasites are, control at the initial source of the micro-organisms, control at the area of water use, and control of the product that is affected by contamination.

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