NEET NEET SOLVED PAPER 2015 (Re)

  • question_answer
    Which of the following reaction(s) can be used for the preparation of alkyl halides?                                                        
    I. \[C{{H}_{3}}C{{H}_{2}}OH+HCl\xrightarrow{anh.ZnC{{l}_{2}}}\]
    II. \[C{{H}_{3}}C{{H}_{2}}OH+HCl\xrightarrow{\,}\]
    III. \[{{(C{{H}_{3}})}_{3}}COH+HCl\xrightarrow{\,}\]
    IV.  \[{{(C{{H}_{3}})}_{2}}CHOH+HCl\xrightarrow{\text{anh}\text{.}\,\text{ZnC}{{\text{l}}_{\text{2}}}}\]

    A)                                                          I, III and IV                                                

    B)  I and II                                                        

    C)                                 Only IV             

    D)                                 III and IV

    Correct Answer: A

    Solution :

    In (I) and (IV) in the presence of Lucas reagent \[(HCl+anh.ZnC{{l}_{2}})\] alcohols give alkyl halides while in (III) alkyl halide is formed due to \[{{S}_{N}}1\] reaction.


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