Q140 / 270 · NDA 2020 · General Ability

Which one of the following is the largest composition in biogas ?

A
Carbon dioxide
Correct answer
B
Methane
C
Hydrogen
D
Hydrogen sulphide

Solution

Biogas is produced by anaerobic digestion of fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material and energy crops. This type of biogas comprises primarily methane. Composition of biogas

Hence, the correct answer is option: 'B'.

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