RAJASTHAN PMT Rajasthan - PMT Solved Paper-2000

  • question_answer
    Halogenation of alkanes is a example of:

    A)  Nucleophilic substitution

    B)  Oxidation

    C)  Electrophilic substitution

    D)  Free radical substitution

    Correct Answer: D

    Solution :

    The halogenation of alkenes is the free radical substitution reaction. (i) \[X-X\xrightarrow{hv}2{{X}^{*}}\] (ii) \[R-H+{{X}^{*}}\xrightarrow{{}}{{R}^{*}}+H-X\] (iii) \[{{R}^{*}}+X-{{X}^{*}}\xrightarrow{{}}R-X+{{X}^{*}}\] (iv) \[{{X}^{*}}+{{R}^{*}}\xrightarrow{{}}R-X\] (v) \[{{X}^{*}}+{{X}^{*}}\xrightarrow{{}}{{X}_{2}}\] (vi) \[{{R}^{*}}+{{R}^{*}}\xrightarrow{{}}R-R\]


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