CBSE Class 7 Answered
Why is sewage said to be a complex mixture?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Sewage contains many substances in it like suspended solids, organic and inorganic impurities, nutrients, saprotrophic and disease causing bacteria and other microbes. Hence it is said to be a complex mixture.
Answered by | 04 Jun, 2014, 03:23: PM
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