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Discussion :: Environmental Science

  1. BOD of a river water is found very high. This means water

    2. A.

     is clear
    B.

     is highly polluted
    C.

     contain Algae
    D.

     contain many dissolved minerals

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    Answer : Option B

    Explanation :

    BOD (Biological Oxygen Demand or Biochemical Oxygen Demand) is the amount of dissolved oxygen, expressed in milligrams of oxygen per litre of water, consumed by micro-organisms to decompose the organic matter present in water.

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