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Q: The 'safe-water' does not contain any:
  • A. Taste
  • B. Colour
  • C. Pathogen
  • D. Odour
Correct Answer: Option C - For safe water MPN for pathogen are zero. So the 'safe-water' does not contains any pathogens. Other parameters have some limit above which the water sample is rejected.
C. For safe water MPN for pathogen are zero. So the 'safe-water' does not contains any pathogens. Other parameters have some limit above which the water sample is rejected.

Explanations:

For safe water MPN for pathogen are zero. So the 'safe-water' does not contains any pathogens. Other parameters have some limit above which the water sample is rejected.