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Discussion :: Environmental Engineering - Civil Engineering

  1. The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about

    2. A.

     0.01 to 0.05 ppm
    B.

     0.05 to 0.5 ppm
    C.

     0.5 to 1.0 ppm
    D.

     1.0 to 5.0 ppm

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    Workspace

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    Answer : Option B

    Explanation :

    Explanation Not Provided

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