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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
(a) Soaps and detergents factories near A and alcohol distillery near B.
(b) Soaps and detergents factories near B and alcohol distillery near A.
(c) Lead storage battery manufacturing factories near A and soaps and detergents factories near B.
(d) Lead storage battery manufacturing factories near B and soaps and detergents factories near A.
Correct Answer: (b) Soaps and detergents factories near B and alcohol distillery near A.
Explanation: Waste of alcohol distillery has pH of about 4-5.i.e acidic in nature. Moreover, soaps and detergents are basic in nature. Hence option (b) is correct.