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NEET Sample Paper NEET Sample Test Paper-70

  • question_answer
    Biochemical oxygen demand (BOD) in a river water

    A) has no relationship with concentration of oxygen in the water            

    B) gives a measure of Salmonella in the water

    C) increases when sewage gets mixed with river water                     

    D) remains unchanged when algal bloom occurs                      

    Correct Answer: C

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