1.

Control of river pollution can be done by providing the extra ___________ during dry season.(a) Water(b) Nitrogen(c) Carbondioxide(d) OxygenI got this question in an interview.Question is from Monitoring and Control of Water Pollution in portion Water of Applied Chemistry

Answer»

Right OPTION is (d) Oxygen

The explanation: By providing the oxygen to the water in dry SEASON will REDUCE the POLLUTION of the RIVERS.



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