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In domestic sewage, impurities in the fo...

In domestic sewage, impurities in the form of suspended solids, colloidal materials and dissolved materials, are about

A

0.001

B

0.021

C

0.05

D

0.1

Text Solution

Verified by Experts

The correct Answer is:
A
A more 0.1 % impurities make domestic sewage unfit for human use. It include:-
* Suspended solid – Sand, slit and clay.
* Colloidal material – Faucal, matter, bacteria, cloth.
* Dissolved materials – Phosphate, nutrients.
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