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Grade upto college level Zoology

What gases are produced in anaerobic sludge digesters? 1) Methane, Hydrogen Sulphide and CO2 2) Methane, Hydrogen Sulphide and O2 3) Hydrogen Sulphide and CO2 4) Mehane and CO2 only

Profile image of Shane Macguire
12 Years agoGrade upto college level
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1 Answer

Profile image of Deepak Patra
12 Years ago
Methane, Hydrogen Sulphide and CO2

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