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JEE Main & Advanced JEE Main Paper (Held On 12-Jan-2019 Morning)

  • question_answer
    Water samples with BOD values of 4 ppm and 18 ppm, respectively, are [JEE Main Online Paper Held On 12-Jan-2019 Morning]

    A) clean and highly polluted

    B) highly polluted and highly polluted

    C) highly polluted and clean

    D) clean and clean.

    Correct Answer: A

    Solution :

    Clean water has a BOD value less than 5 ppm whereas highly polluted water has BOD value of 17 ppm or more.


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