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What gases are produced in anaerobic slu...

What gases are produced in anaerobic sludge digesters?

A

Methane and `CO_(2)` only

B

Methane, Hydrogen sulphide and `CO_(2)`

C

Methane, Hydrogen sulphide and `O_(2)`

D

Hydrogen sulphide and `CO_(2)`

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ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-EXERCISE-II
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