J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    Least stable conformer of cyclohexane is

    A)  chair          

    B)  boat

    C)  twist boat      

    D)  planar hexagon

    Correct Answer: D

    Solution :

     Planar hexagon conformer has considerable  angle strain due to the fact that its bonds are not  \[{{109.5}^{o}}.\] It also has torsional strain. Due to presence of these strains planar hexagon conformer of cyclohexane is least stable.


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