41
Question
Polluted water can be purified by using
Polluted water can be purified by using
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Solution
The correct option is B Both A and B
Water pollution due to organic sources like pollution due to sewage can be prevented by treating sewage before passing into the water course, in sewage or effluent treatment plants (ETP). Domestic sewage primarily contains biodegradable organic matter, which readily decomposes by bacteria, algae and other micro-organisms, which can multiply by using these organic substances as substrates and hence reduce some of the components of sewage. Thus, the correct answer is option D
Water pollution due to organic sources like pollution due to sewage can be prevented by treating sewage before passing into the water course, in sewage or effluent treatment plants (ETP). Domestic sewage primarily contains biodegradable organic matter, which readily decomposes by bacteria, algae and other micro-organisms, which can multiply by using these organic substances as substrates and hence reduce some of the components of sewage. Thus, the correct answer is option D
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