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Question

Product (A) is :


A

Ph-CH2-CL

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B

Ph-CH2-Br

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C

Ph-CH2-CCl3

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D

Ph-CH2-CBrCl2

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Solution

The correct option is B

Ph-CH2-Br


It is given that product A is not a result of electrophilic substitution. Also the presence of light (UV - hν) implies free radical substitution.

Cl3CBrhvCCl3+Br

The above homolytic fission is the key to solving this problem.

Once this is accomplished, the Hydrogen atoms not attached to the aromatic ring can only be substituted.


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