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  1. Aerobic biological oxidation ponds used for the purification of polluted water

    2. A.
    destroys/removes pathogen from the sewage.
    B.
    is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents.
    C.
    destroys/removes pathogen much more effectively if the sewage is chlorinated.
    D.
    all (a), (b) & (c).

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    Answer : Option D

    Explanation :

    No answer description available for this question.

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