AMU Medical AMU Solved Paper-2013

  • question_answer
    In anaerobic sludge digestion during secondary treatment of sewage, biogas is produced, which is a mixture of

    A)  methane \[{{H}_{2}}S\] and \[{{H}_{2}}S\]

    B)  methane and \[C{{O}_{2}}\]

    C)  methane, \[{{H}_{2}}S,C{{O}_{2}}\] and CO

    D)  methane, \[{{H}_{2}}S,C{{O}_{2}}\], CO and ethane

    Correct Answer: B

    Solution :

                     Archaebacteria and methanogens are evolved in production of biogas or gobar gas. Some other bacteria involved in degradation process are Bacillus clostridium, Bacterium, etc. Biogas is produced during second treatement of sewage by anaerobic degradation of sludge by microbe, which is a mixture of \[C{{H}_{4}}\] (50-70%), \[C{{O}_{2}}\] (25-35%) \[{{H}_{2}}\] (1-5%) \[{{N}_{2}}\] (2-7%) and \[{{O}_{2}}\](0.0-1 %) and rarely \[{{H}_{2}}S\].


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