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During sewage treatment, biogases are po...

During sewage treatment, biogases are poroduced which include?

A

Hydrogensulphide, nitrogen, methane

B

Methane, hydrogensulphide, carbon dioxide

C

Methane, oxygen, hydrogensultphide

D

Hydrogensulphide, methane, sulphur dioxide

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The correct Answer is:
(d)
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