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Which color indicates the fresh sewage?

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+2 votes
in Environmental Engineering by (81.4k points)
Which color indicates the fresh sewage?

(a) Pink

(b) Red

(c) Black

(d) Grey

I got this question in unit test.

Query is from Physical Characteristics of Waste Water topic in division Wastewater Characteristics of Environmental Engineering

1 Answer

+2 votes
by (693k points)
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Best answer
Right option is (d) Grey

The best I can explain: If the color of sewage is grey, yellow and light brown, then it means that the sewage is fresh.

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