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During sewage treatment, biogases are produced which include:
Question

During sewage treatment, biogases are produced which include:

A.

hydrogensulphide, nitrogen, methane

B.

methane, hydrogensulphide, carbon dioxide

C.

methane, oxygen, hydrogensulphide

D.

hydrogensulphide, methane, sulphur dioxide

Correct option is B

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