. The source of energy produced during waste water treatment is
(a) LPG.
(b) bio-gas.
(c) kerosene.
(d) petrol.
Best Answer
(b)
Explanation- Bio-gas is produced during waste water treatment. It is used as a fuel.
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(a) LPG.
(b) bio-gas.
(c) kerosene.
(d) petrol.
(b)
Explanation- Bio-gas is produced during waste water treatment. It is used as a fuel.