Which is the only reagent that will react with benzene under the specified conditions?

C l_{2}, F e {C l}_{3},

heat

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K M n O_{4}, H_{2} O; 25^{\circ} C

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H_{2} O; 25^{\circ} C

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{B r}_{2} / {C C l}_{4}; 25^{\circ} C,

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Solution

The correct option is A $C l_{2}, F e {C l}_{3},$ heat
Due to delocalisation of $π$ electrons, benzene doesn't undergo addition reaction. (Since benzene is aromatic)

So, it will not perform $B, C$ and $D$ reactions as they are addition reactions.

But with $C l_{2} / F e C l_{3}$ is electrophilic aromatic substitution reaction and in this reaction, chlorobenzene is formed as a product.

Option A is correct.

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