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Question

The high amount of E. coli in water is the indicator of

A
Hardness of water
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B
Industrial pollution
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C
Sewage pollution
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D
Presence of chlorine in water
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Solution

The correct option is C Sewage pollution
Escherichia coli is the microflora of animal's intestine and thus found in fecess. Sewage water mainly contains animal excreta. The MPN is most probable number of E. coli which indicates the water pollution due to human faeces and sewage pollution. Thus, the correct answer is option C.

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