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  1. The biogas used for cooking is a mixture of which of the following?

    2. A.

     Carbon dioxide and oxygen
    B.

     Isobutane and propane
    C.

     Methane and carbon monoxide
    D.

     Methane and carbon dioxide

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    Answer : Option D

    Explanation :

    Biogas is essentially a mixture of Methane (CH4, around 55-75%) but also contains Carbon Dioxide (CO2), around 25-30%), varying quantities of Water (H2O) and Hydrogen Sulphide (H2S). Other compounds can also be found, especially in waste dump biogas: Ammonia (NH3), Hydrogen (H2), Nitrogen (N2) and Carbon Monoxide (CO). Methane is the valuable component under the aspect of using biogas fuel.

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