CBSE Class 10 Science 2020 Outside Delhi Set 1

Question : 9

Total: 30

Several factories were pouring their wastes in rivers A and B. Water samples were collected from these two rivers. It was observed that sample collected from river A was acidic while that of river B was basic. The factories located near A and B are :

Soaps and detergents factories near A and alcohol distillery near B.
Soaps and detergents factories near B and alcohol distillery near A.
Lead storage battery manufacturing factories near A and soaps and detergents factories near B.
Lead storage battery manufacturing factories near B and soaps and detergents factories near A.

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