Which gas is the major component of biogas?

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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug, 2023 Shift 4)
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  1. CNG
  2. Methane
  3. Hydrogen
  4. LPG

Answer (Detailed Solution Below)

Option 2 : Methane
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
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Detailed Solution

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The correct answer is Methane.

Key Points

  • Biogas is primarily composed of methane gas, which is the major component of biogas.
  • Methane gas makes up about 50-75% of biogas, while the remaining 25-50% is made up of carbon dioxide, water vapor, and trace amounts of other gases.
  • Biogas is a gaseous renewable energy source.
  • Anaerobic digestion using methanogens or anaerobic organisms in a bioreactor, biodigester, or anaerobic digester produces biogas.
  • The main components of the gas are methane (CH4) and carbon dioxide (CO2), with trace amounts of moisture, siloxanes, and hydrogen sulfide (H2S).

Additional Information

  • Compressed natural gas:
    • CNG is a fossil fuel that is primarily composed of methane gas.
    • CNG is commonly used as a fuel for vehicles and is produced from natural gas reserves.
  • Hydrogen gas:
    • It is a colorless, odorless, tasteless, and highly flammable gas.
    • It is commonly used in fuel cells to generate electricity.
  • Liquefied petroleum gas:
    • It is a mixture of propane and butane gases.
    • It is commonly used as a fuel for heating and cooking.
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