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Measures to Control Pollution

The clean wat...

Question

The clean water should have BOD value:

A

100 PPM

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B

less than 5 PPM

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C

20 PPM

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D

200 PPM

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Solution

The correct option is B less than 5 PPM
A water supply with a BOD level of 3-5 ppm is considered moderately clean. In water with a BOD level of 6-9 ppm, the water is considered somewhat polluted because there is usually organic matter present and bacteria are decomposing this waste.

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