NEET Sample Paper NEET Sample Test Paper-21

  • question_answer
    Which of the following hydrocarbon has the least carbon-carbon bond length?

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

    B) \[{{C}_{6}}{{H}_{6}}\]     

    C)   \[{{C}_{2}}{{H}_{4}}\]     

    D)   \[{{C}_{2}}{{H}_{6}}\]     

    Correct Answer: A

    Solution :

    \[C-C\]bond length in \[{{C}_{2}}{{H}_{2}}-1.20\,\overset{o}{\mathop{A}}\,\] \[{{C}_{2}}{{H}_{4}}-1.34\overset{o}{\mathop{A}}\,\] \[{{C}_{6}}{{H}_{6}}-1.39\,\overset{o}{\mathop{A}}\,\] \[{{C}_{2}}{{H}_{6}}-1.54\,\overset{o}{\mathop{A}}\,\] Hence, the correct option is (a).

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