JEE Main & Advanced Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank Preparation of Halogen containing compounds

  • question_answer
    Which compound does not form iodoform with alkali and iodine [IIT-JEE 1985]

    A) Acetone

    B) Ethanol

    C) Diethyl ketone

    D) Isopropyl alcohol

    Correct Answer: C

    Solution :

               \[C{{H}_{3}}C{{H}_{2}}-CO-C{{H}_{2}}-C{{H}_{3}}\xrightarrow{NaOH/{{I}_{2}}}\text{No  yellow  ppt}\] \[\left. \begin{matrix}    C{{H}_{3}}COC{{H}_{3}}\xrightarrow{NaOH/{{I}_{2}}}CH{{I}_{3}}  \\    {{C}_{2}}{{H}_{5}}OH\xrightarrow{NaOH/{{I}_{2}}}CH{{I}_{3}}  \\    C{{H}_{3}}-\underset{OH}{\mathop{\underset{|\,\,\,\,\,}{\mathop{CH}}\,}}\,-C{{H}_{3}}\xrightarrow{NaOH/{{I}_{2}}}CH{{I}_{3}}  \\ \end{matrix} \right\}yellow\,\,ppt.\]


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