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12th Class Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank Case Based - Haloalkanes and Haloarenes

  • question_answer
    The reactivity of the compounds (i) MeBr, (ii) \[PhC{{H}_{2}}Br\], (iii) MeCl, (iv) \[p-MeO{{C}_{6}}{{H}_{4}}Br\] decreases as

    A) (i) > (ii) >(iii) > (iv)

    B) (iv) > (ii) >(i) > (iii)

    C) (iv) > (iii) >(i) > (ii)

    D) (ii) > (i) >(iii) > (iv)

    Correct Answer: D

    Solution :

    The order of reactivity follows the sequence : benzyl halides > alkyl halides > aryl halides. Out of chlorides and bromides, bromides are more reactive. Therefore, the correct order of reactivity is \[\underset{(ii)}{\mathop{PhC{{H}_{2}}Br}}\,>\underset{(i)}{\mathop{MrBr}}\,>\underset{(iii)}{\mathop{MeCl}}\,>\underset{(iv)}{\mathop{p-MeO{{C}_{6}}{{H}_{4}}Br}}\,\]


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