Assertion: Toxic industrial wastes should be treated chemically to neutralize the harmful substances present in it before discharging into rivers and lakes
Reason : Sewage should first be treated at the sewage treatment plant to remove the organic matter from it in the form of manure.

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Both A and R are true and R is correct explanation of A

Both A and R are true, but R is not correct explanation

A is true R is false

A is false but R is true

answer is B.

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Detailed Solution

Toxic industrial wastes should be treated chemically to neutralize the harmful substances present in it before discharging into rivers and lakes, this helps to safeguard the aquatic life in and around.

Sewage should first be treated at the sewage treatment plant to remove the organic matter from it in the form of manure, this will help to eradicate eutrophic at disposal and manures can be used for farming.

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