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8th Class Science Coal and Petroleum Question Bank Coal and Petroleum

  • question_answer
    Which of the following is formed during the process of anaerobic fermentation?

    A)  Biogas                 

    B)                         Natural gas

    C)  Water gas          

    D)         Petroleum

    Correct Answer: A

    Solution :

    Biogas is produced by the decomposition of animal dung, domestic and agricultural waste in the presence of anaerobic bacteria. It contains methane in bulk (50 - 68 %) and other gases in relatively low proportions i.e. \[C{{O}_{2}}(25-35%),\,{{H}_{2}}(1-5%),\,{{N}_{2}}(2-7%)\]etc.


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