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    Question

    Biogas is mainly composed

    of?
    A CO₂ and hydrogen Correct Answer Incorrect Answer
    B Hydrogen and Methane Correct Answer Incorrect Answer
    C CO₂ and Methane Correct Answer Incorrect Answer
    D Hydrogen and Oxygen Correct Answer Incorrect Answer

    Solution

    Biogas is primarily composed of methane (CH₄), which makes up approximately 50-70% of biogas, and carbon dioxide (CO₂), which constitutes around 30-40% of biogas. This composition is a result of anaerobic digestion, a process where organic materials (plant and animal products) are broken down by bacteria in an oxygen-free environment.

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