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Farm water supplies must be protected from surface contamination. Water is usually tested for __________ as an indicator of possible sewage contamination.

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Farm water supplies must be protected from surface contamination. Water is usually tested for __________ as an indicator of possible sewage contamination.

(a) Proteolytic bacteria

(b) Lipolytic bacteria

(c) Coliform bacteria

(d) Psychotropic bacteria

This question was addressed to me during an online exam.

Asked question is from Quality in chapter Quality parameters of Dairy Engineering

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Right option is (c) Coliform bacteria

To elaborate: In order to protect far water from surface contamination, the water is tested for coliform bacteria. If it tests positive thus water is infected.

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