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JEE Main levelSingle correct optionDifficulty 2 of 3ph093

Benzene reacts with excess chlorine in bright sunlight (no halogen carrier) mainly to give

A $C X_{6} H X_{6} Cl X_{6}$ by addition
B $C X_{6} H X_{5} Cl$ by substitution
Cno reaction
D $C X_{6} Cl X_{6}$ and $H X_{2}$

Answer: A

In sunlight the free radical addition pathway is followed:

C X_{6} H X_{6} + 3 Cl X_{2} C X_{6} H X_{6} Cl X_{6}

. Substitution to chlorobenzene needs a Lewis acid carrier such as

FeCl X_{3}

in the dark.

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