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Question
The gases produced in anaerobic sludge digesters are _______.
Options
Methane, oxygen and hydrogen sulphide
Hydrogen sulphide, methane and sulphur dioxide
Hydrogen sulphide, nitrogen and methane
Methane, hydrogen sulphide and CO2
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Solution
The gases produced in anaerobic sludge digesters are Methane, hydrogen sulphide and CO2.
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