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  4. Biochemical oxygen demand(BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct?

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Q. Biochemical oxygen demand(BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct?

JIPMERJIPMER 2019Environmental Chemistry

Solution:

Clean water has BOD value less than 5 ppm. Polluted water has BOD value higher than 10 ppm.