JEE Main & Advanced Chemistry Hydrocarbons Question Bank Alkane

  • question_answer Which of the following has highest percentage of hydrogen [CPMT 1975; 79]

    A) \[C{{H}_{4}}\]

    B) \[{{C}_{2}}{{H}_{4}}\]

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

    D) \[{{C}_{2}}{{H}_{2}}\]

    Correct Answer: A

    Solution :

               % of hydrogen = \[\frac{\text{Mass of hydrogen}}{\text{Mass of compound}}\ \times \ 100\] \[C{{H}_{4}}=\frac{4}{16}\ \times \ 100\ =\ 25%\].

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