12th Class Chemistry Alcohols, Phenols and Ethers / एल्कोहॉल, फीनॉल तथा ईथर Question Bank MCQs - Alcohols, Phenols and Ethers

  • question_answer
    Complete the missing links. \[C{{H}_{3}}CHBrC{{H}_{3}}\xrightarrow{alc.\,KOH}X\xrightarrow[Peroxide]{HBr}Y\xrightarrow{C{{H}_{3}}ONa}Z\]

    A)
    X Y Z
    \[C{{H}_{3}}CH=C{{H}_{2}}\] \[C{{H}_{3}}CH\left( Br \right)C{{H}_{2}}Br\] \[C{{H}_{3}}CH\left( OH \right)C{{H}_{3}}\]

    B)
    \[C{{H}_{3}}CH=C{{H}_{2}}\] \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\] \[C{{H}_{3}}C{{H}_{2}}OC{{H}_{2}}C{{H}_{3}}\]

    C)
    \[C{{H}_{3}}CH=C{{H}_{2}}\] \[C{{H}_{3}}CH\left( Br \right)C{{H}_{3}}\] \[C{{H}_{3}}C{{H}_{2}}OC{{H}_{2}}C{{H}_{3}}\]

    D)
    \[C{{H}_{3}}CH=C{{H}_{2}}\] \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\] \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OC{{H}_{3}}\]

    Correct Answer: D

    Solution :

    \[C{{H}_{3}}CHBrC{{H}_{3}}\xrightarrow{alc.\,KOH}C{{H}_{3}}CH=C{{H}_{2}}\] \[\downarrow \]HBr, peroxide \[C{{H}_{3}}\underset{Z}{\mathop{C{{H}_{2}}}}\,C{{H}_{2}}OC{{H}_{3}}\xleftarrow{C{{H}_{3}}ONa}C{{H}_{3}}\underset{Y}{\mathop{C{{H}_{2}}}}\,C{{H}_{2}}Br\]


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