J & K CET Engineering J and K - CET Engineering Solved Paper-2013

  • question_answer
    Idenitfy Z in the following sequence \[C{{H}_{3}}C{{H}_{2}}I\xrightarrow{KCN}X\xrightarrow{{{H}_{3}}{{O}^{+}}/{{H}_{2}}O}Y\] \[\xrightarrow[\Delta ]{{{H}_{3}}{{O}^{+}}/{{H}_{2}}O}Z\]

    A) \[C{{H}_{3}}COCl\]

    B) \[C{{H}_{3}}CON{{H}_{2}}\]

    C) \[C{{H}_{3}}COOH\]

    D) \[C{{H}_{3}}C{{H}_{2}}COOH\]

    Correct Answer: D

    Solution :

    \[C{{H}_{3}}{{H}_{2}}l\xrightarrow[-Kl]{KCN}C{{H}_{3}}C{{H}_{2}}CN\xrightarrow{{{H}_{3}}{{O}^{+}}/{{H}_{2}}O}\] \[C{{H}_{3}}C{{H}_{2}}CHO\xrightarrow{{{H}_{3}}{{O}^{+}}/{{H}_{2}}O}\underset{\text{propanoic}\,\text{acid}}{\mathop{C{{H}_{3}}C{{H}_{2}}COOH}}\,\]


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