Which one of the following is the major constituent of biogas?

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NDA (Held On: 17 Nov 2019) General Ability Test Previous Year paper
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  1. Carbon dioxide
  2. Nitrous oxide
  3. Methane
  4. Oxygen

Answer (Detailed Solution Below)

Option 3 : Methane
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Detailed Solution

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Biogas primarily comprises methane and carbon dioxide.

  • It also has traces of Hydrogen Sulphide, Siloxanes, and Moisture.
  • Gases like hydrogen, carbon dioxide, and hydrogen can be oxidized with oxygen.
  • Biogas thus is used for heating purposes such as cooking.
  • Biogas can be compressed in the same way natural gas is compressed to CNG.
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