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

  • question_answer
    Glycerol reacts with \[{{P}_{4}}+{{I}_{2}}\] to form           [CBSE PMT 1991]

    A)                 Aldehyde           

    B)                 Allyl iodide

    C)                 Allyl alcohol       

    D)                 Acetylene

    Correct Answer: B

    Solution :

                    \[\begin{matrix}    C{{H}_{2}}-OH  \\    \underset{|}{\overset{|}{\mathop{C}}}\,H-OH\,  \\    C{{H}_{2}}OH\,\,  \\ \end{matrix}\underset{\text{Small}\,\,\text{amount}}{\mathop{\xrightarrow{{{P}_{4}}+{{I}_{2}}}}}\,\underset{\text{Unstable}}{\mathop{\begin{matrix}    C{{H}_{2}}-I  \\    \underset{|}{\overset{|}{\mathop{C}}}\,H-I\,  \\    C{{H}_{2}}-I  \\ \end{matrix}}}\,\xrightarrow[-{{I}_{2}}]{}\,\underset{\text{Allyl  iodide}}{\mathop{\begin{array}{*{35}{l}}    C{{H}_{2}}\,\,\,\,\,\,\,  \\    \underset{|}{\overset{|\,|}{\mathop{C}}}\,H\,\,\,\,\,\,\,  \\    C{{H}_{2}}-I  \\ \end{array}}}\,\]


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