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    Question

    Indicator of faecal contamination of water is

    A Salmonila Correct Answer Incorrect Answer
    B E.coli Correct Answer Incorrect Answer
    C Listeria Correct Answer Incorrect Answer
    D All Correct Answer Incorrect Answer

    Solution

    Faecal indicator A group of organisms that indicates the presence of faecal contamination, such as the bacterial groups thermotolerant coliforms or E.  coli . 

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