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J & K CET Medical J & K - CET Medical Solved Paper-2015

  • question_answer
    The polluting strength of sewage is usually characterised by its

    A)  BOD               

    B)  nitrogen content

    C)  ozone content     

    D)  eutrophication

    Correct Answer: A

    Solution :

     There will be more microbial activity in the sewage if more dead organic matter is present. More microbial activity will require more oxygen which we call technically as biological oxygen demand. So, the pollution strength of any sewage can be determined by its Biological Oxygen Demand (BOD).


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