Q.

Statement 1: If BOD level of water in a reservoir is less than 5 ppm it is highly Polluted.

Statement 2: High biological oxygen demand means low activity of bacteria in water.

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a

Statement 1 is correct and statement 2 is incorrect

b

Statement 1 is incorrect and statement 2 is correct

c

Both statements 1 and 2 are correct

d

Both statements 1 and 2 are incorrect

answer is C.

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Detailed Solution

If BOD is less than 5 ppm, the water is considered as clear. High BOD represents less activity of bacteria.

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