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What is the major component of waste-water?

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in Biology – Class 12 by (271k points)
What is the major component of waste-water?

(a) Pure water

(b) Human excreta

(c) Sand

(d) Clay

I got this question in semester exam.

This interesting question is from Microbes in Sewage Treatment topic in chapter Microbes in Human Welfare of Biology – Class 12

1 Answer

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Right answer is (b) Human excreta

The explanation is: A major component of this waste-water is human excreta. This municipal waste-water is also called as sewage. It contains a large amount of organic matter and microbes. Many of which are pathogenic.

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