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JEE Main & Advanced JEE Main Paper (Held On 15 April 2018) Slot-II

  • question_answer
    Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct?                                  [JEE Online 15-04-2018 (II)]

    A) Polluted water has BOD value higher than 10 ppm

    B) Aerobic bacteria decrease the BOD value

    C) Anaerobic bacteria increase the BOD value

    D) Clean water has BOD value higher than 10 ppm

    Correct Answer: A

    Solution :

    Clean water has BOD value less than 5 ppm. Polluted water has BOD value higher than 10 ppm. The option (A) represents correct statement.


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