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Question

Municipality officials use chlorine in water purification. Why?

A
Chlorine cleans water
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B
Chlorine helps water to cool easily
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C
Chlorine coagulates mud particles
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D
Chlorine kills harmful bacteria
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Solution

The correct option is D Chlorine kills harmful bacteria
Chlorination is used to seperate bacteria from homogeneous solution of water and bacteria. Hence, Municipality officials use chlorine in water purification.

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