BOD value of  clean water  and highly polluted water is respectively

BOD value of  clean water  and highly polluted water is respectively

  1. A

    >17 and < 5

  2. B

    >5 and <17

  3. C

    < 5 and < 17

  4. D

    <5 and >17

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    Solution:

    BOD value of clean water is less than 5.

    BOD value of polluted water is greater than or equal to 17

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