JEE Main & Advanced Chemistry GOC Question Bank Critical Thinking

  • question_answer In the reaction \[C{{H}_{3}}CHO+HCN\to C{{H}_{3}}CH(OH)CN\]a chiral centre is produced. This product would be [CBSE PMT 1995]

    A) Laevorotatory

    B) Meso compound

    C) Dextrorotatory

    D) Racemic mixture

    Correct Answer: D

    Solution :

    \[C{{H}_{3}}CHO+HCN\to C{{H}_{3}}-\underset{OH}{\mathop{\underset{|\,\,\,\,\,}{\overset{*\,\,\,\,}{\mathop{CH}}}\,}}\,-CN\] (Both d and l forms are obtained) Hence, product will be a racemic mixture.

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