RAJASTHAN PMT Rajasthan - PMT Solved Paper-2011

  • question_answer
    Which was absent in the atmosphere at the time of origin of life?

    A)  \[N{{H}_{3}}\]                                 

    B)  \[{{H}_{2}}\]

    C)  \[{{O}_{2}}\]                    

    D)         \[C{{H}_{4}}\]

    Correct Answer: C

    Solution :

    Primitive atmosphere of earth was reducing containing methane, ammonia, hydrogen and water vapour. There was no free oxygen.


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