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Discussion :: Waste Water Engineering

  1. To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of

    2. A.

     Hydrochloric acid
    B.

     Sulphuric acid
    C.

     Nitric acid
    D.

     Citric acid

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    Answer : Option B

    Explanation :

    Explanation Not Provided

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