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Discussion :: Waste Water Engineering

  1. For detecting the nitrites in the sewage, the matching colour may be developed by adding

  2. A.

     Potassium permanganate

    B.

     Sulphuric acid and napthamine

    C.

     Phenol-di -sulphuric acid potassium hydroxide

    D.

     None of these

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    Answer : Option B

    Explanation :

    Explanation Not Provided


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