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    Question

    What is the main constituent of

    biogas?
    A Carbon dioxide Correct Answer Incorrect Answer
    B Methane Correct Answer Incorrect Answer
    C Hydrogen Correct Answer Incorrect Answer
    D Nitrogen Correct Answer Incorrect Answer

    Solution

    Methane (CH4) is the main constituent of biogas, typically making up about 50-75% of the gas produced during the anaerobic digestion of organic matter.

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