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Discussion :: Water Supply Engineering

  1. By adding 1 ml of orthotolidine solution to 100 ml chlorinated water taken after contact period, the residual chlorine makes the colour of solution

  2. A.
    yellowish
    B.
    greenish
    C.
    bluish
    D.
    reddish
    E.
    violet.

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    Answer : Option A

    Explanation :

    No answer description available for this question. Let us discuss.


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