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  5. Pollution of Air and Water

Railways General Science & Technology Pollution of Air and Water Sample Paper Water Pollution Sample Test Paper-21

  • question_answer
    BOD is ______ in polluted water and ______ in potable water.

    A)  More, less        

    B)  less, medium

    C)  Medium, more

    D)  less, more

    Correct Answer: A

    Solution :

     The degree of pollution is directly proportional to BOD. Therefore more the organic pollution (specially sewage), more would be BOD of water.


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