Question

give reason :-
1. chemicals like paints , solvents ,
should not be disposed off in the drain.​

Answer 1

Chemicals like paints, solvents, insecticides, motor oil, medicines may kill microbes that help purify water. So do not throw them down the drain. drains. They do not allow free flow of oxygen.

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Answer 2

Answer:

Chemicals like paints, solvents, insecticides should not be thrown down the drain as it may kill the useful microbes that help to decompose the wastes present in the sewage and purify water.