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UPSC General Studies Solved Paper - General Studies-2012

  • question_answer
    Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

    A)  Hydrogen, oxygen, sodium 

    B)  Carbon, hydrogen, nitrogen

    C)  Oxygen, calcium, phosphorus

    D)  Carbon, hydrogen, potassium

    Correct Answer: B

    Solution :

    Exp. [b] The origin of life started with the formation of simple organic molecules like nucleotides. The building blocks of nucleotides are carbon, hydrogen, nitrogen, oxygen and phosphorus.


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