JEE Main & Advanced Chemistry Alcohols, Phenols and Ethers / एल्कोहॉल, फीनॉल तथा ईथर Question Bank Properties of alcohol Phenol and Ethers

  • question_answer
    What is formed when glycerol reacts with HI       [DCE 2002]

    A)                 \[\underset{C{{H}_{2}}OH}{\overset{C{{H}_{2}}OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,HI\ \ \ \ \,}}}\,\]

    B)                 \[\underset{C{{H}_{2}}I}{\overset{C{{H}_{2}}\ }{\mathop{\underset{|}{\overset{||}{\mathop{C}}}\,H\ \ }}}\,\]

    C)                 \[\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,{{H}_{2}}}}}\,\]               

    D)                 \[\underset{C{{H}_{3}}\ \ \ \ }{\overset{C{{H}_{2}}OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,=O\ \ }}}\,\]

    Correct Answer: B

    Solution :

    \[\underset{\text{Glycerol}}{\mathop{\underset{C{{H}_{2}}OH}{\overset{C{{H}_{2}}OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,HOH\ }}}\,}}\,+3HI\xrightarrow[-3{{H}_{2}}O]{}\left[ \underset{C{{H}_{2}}-I}{\overset{C{{H}_{2}}-I}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,H-I\,}}}\, \right]\xrightarrow[-{{I}_{2}}]{}\underset{\text{Allyl iodide}}{\mathop{\underset{C{{H}_{2}}\ }{\overset{C{{H}_{2}}I}{\mathop{\underset{||}{\overset{|}{\mathop{C}}}\,H\ \ }}}\,}}\,\]


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