Which one of the following gases is released mostly from landfills in urban areas?
Nitrogen
Hydrogen
Methane
Oxygen
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Answer is Wrong!
This question was previously asked in
UPSC CDS-2 – 2016
Landfills are significant sources of landfill gas, which is produced by the anaerobic decomposition of organic solid waste. The primary components of landfill gas are methane (CH4) and carbon dioxide (CO2). While CO2 is also released, methane is often present in high concentrations (typically 40-60%) and is a potent greenhouse gas.