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

  • question_answer
    An organic compound with molecular formula \[{{C}_{4}}{{H}_{10}}O\] does not react with sodium. With excess of HI it gives only one type of alkyl halide. The compound is

    A) \[{{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\]

    B) \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\  OC{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{3}}\]

    C) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OC{{H}_{3}}\]

    D) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\]

    Correct Answer: A

    Solution :

    \[{{C}_{4}}{{H}_{10}}O\]can have two structures: \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\]and\[{{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\]. Since it does not react with sodium metal, it can not be an alcohol. \[{{C}_{4}}{{H}_{5}}O{{C}_{2}}\underset{(excess)}{\mathop{Hl}}\,\to 2{{C}_{2}}{{H}_{5}}l+{{H}_{2}}O\]


You need to login to perform this action.
You will be redirected in 3 sec spinner