NEET 2020 Model Question Paper 3

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Question : 125 of 180

Marks: +1, -0

What gases are produced during 'anaerobic sludge digestion'?

Methane and CO2 but not H2S
Methane, H2S and CO2
Methane, H2S and O2
H2S and CO2 but not Methane

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