DUMET Medical DUMET Medical Solved Paper-2003

  • question_answer
    Biogas produced by anaerobic decomposition   used in combustion is mainly due to presence  of:-

    A)  \[{{H}_{2}}\]           

    B)  \[C{{H}_{4}}\]

    C)  \[{{H}_{2}}S\]          

    D)  None of these

    Correct Answer: B

    Solution :

    Biogas is produced by anaerobic fermentation of biomass. It contains \[C{{H}_{4}}\](50-70%), \[C{{O}_{2}}\](30- 40%) and traces of \[{{H}_{2}}\] and \[{{N}_{3}}\]. Besides dung Eichhornea crassipes is extensively utilized for biogas production. \[{{H}_{2}}S\] was a source of H for the photosynthetic bacteria hence this photosynthesis is an oxygenic.


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