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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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