JEE Main & Advanced Chemistry Hydrocarbons Question Bank Critical Thinking

  • question_answer The only o, p-directing group which is deactivating in nature is

    A) \[-N{{H}_{2}}\]

    B) \[-OH\]

    C) \[-X\] (Halogens)

    D) \[-R\] (Alkyl groups)

    Correct Answer: C

    Solution :

               Electron accepting groups which make the substitution difficult are known or deactivating groups.                    o. p. directing groups are as follow : \[-C{{H}_{3}},{{C}_{2}}{{H}_{5}}(-R),-N{{H}_{2}},-OH\], halogens \[(Cl,\,Br,\,I)\].


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