Q.

Which of the following is not found in polluted water?

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a

Mercury salts

b

Desired quantity of minerals

c

Pesticides

d

Bacteria

answer is D.

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Detailed Solution

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  • Polluted water contains undesirable substances like pesticides, fertilizers, chemicals like mercury salts, arsenic, etc. and harmful microbes such as bacteria, etc.
  • Desired quantity of minerals is unavailable in polluted water.
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