NEET Sample Paper NEET Sample Test Paper-21

  • question_answer                         In which of the following compounds, the weight percentage of C and H are 80 and 20 respectively?

    A) \[{{C}_{2}}{{H}_{6}}\]                 

    B) \[C{{H}_{4}}\]         

    C)   \[{{C}_{6}}{{H}_{6}}\]     

    D)   \[{{C}_{2}}{{H}_{3}}\]  

    Correct Answer: A

    Solution :

    For \[{{C}_{2}}{{H}_{6}},\]the total gram molecular weight =30 g Out of \[30\,g\to 26\,g\]of carbon weight, i.e., 80 per cer Same as out of \[30\,g\to 6g\,{{H}_{2}}\] weight, i.e., 20 per cent. Hence, the correct option is (a).

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