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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2013
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Q)

During sewage treatment, biogases are produced which include :


( A ) hydrogensulphide, nitrogen, methane
( B ) methane, hydrogensulphide, carbon dioxide
( C ) hydrogensulphide, methane, sulphur dioxide
( D ) methane, oxygen, hydrogensulphide

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