The gases produced in anaerobic sludge d...

The gases produced in anaerobic sludge digesters are

A

Methane, oxygen and hydrogen sulphide.

B

Hydrogen sulphide, methane and sulphur dioxide.

C

Hydrogen sulphide, nitrogen and methane.

D

Methane, hydrogen sulphide and `CO_2`.

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The correct Answer is:

D

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