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

  • question_answer
    The dehydration of 2-methyl butanol with conc. \[{{H}_{2}}S{{O}_{4}}\] gives     [UPSEAT 2004]

    A)                 2-methyl butene as major product

    B)                 Pentene

    C)                 2-methyl but-2-ene as major product

    D)                 2-methyl pent-2-ene

    Correct Answer: A

    Solution :

               \[\underset{\text{2 Methyl butanol}}{\mathop{{{H}_{3}}C-C{{H}_{2}}-\underset{C{{H}_{3}}\ \,}{\mathop{\underset{|}{\mathop{C}}\,H-}}\,C{{H}_{2}}-OH}}\,\underset{\text{dehydration}}{\mathop{\xrightarrow{\text{Conc}\text{. }{{H}_{2}}S{{O}_{4}}}}}\,\]\[\underset{\begin{smallmatrix}  \text{2-Methyl butene} \\  \text{ Major product} \end{smallmatrix}}{\mathop{{{H}_{3}}C-{{H}_{2}}C-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,=\ }}\,C{{H}_{2}}}}\,\]


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