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Science and Technology - General Knowledge Questions
Which one of the following gases is released mostly from landfills in urban areas?
A)
Oxygen
B)
Methane
C)
Nitrogen
D)
Hydrogen

Correct Answer :   Methane

Decomposing waste in the landfills, by the action of microorganisms, produce methane and carbon dioxide. Landfill gas consists of 40-60% of methane and rest is carbon dioxide. Trace amount of volatile organic compounds (<1) are also present which mainly comprise of hydrocarbons.

Published On : June 13, 2021
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