NEET Sample Paper NEET Sample Test Paper-14

  • 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 :

    Oxygen gas was not present due to reducing atmosphere; it only came to existence after the evolution of photosynthesis process.


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