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What should be the amount of BOD in the drinking water?(a) More than 1 ppm(b) Less than 1 ppm(c) 5 ppm(d) 10 ppmI had been asked this question at a job interview.My question is based upon Environmental Issues topic in portion Environmental Issues of Biology – Class 12 |
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Answer» Correct ANSWER is (b) Less than 1 PPM |
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