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CMC Medical CMC-Medical Ludhiana Solved Paper-2009

  • question_answer
    According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?

    A)  Methane                           

    B)  Oxygen

    C)  Hydrogen                          

    D)  Water vapor

    Correct Answer: A

    Solution :

                    According to Oparin, the atmosphere of primitive earth was reducing because H atoms were most numerous and most reactive. Large quantities of\[{{H}_{2}},\]\[{{N}_{2}}\]water vapour, \[C{{O}_{2}}\]and\[C{{H}_{4}}\]were present but free oxygen was not present in significant amount.


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