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Q.

Regarding electrophilic substitution reactions of benzene, false statement is

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a

In case of nitration, H2SO4 behaves as a base, HNO3 as an acid.

b

In Friedal – Craft’s reactions catalyst is anhydrous AlCl3.

c

In second step of electrophilic substitution mechanism, carbocation is intermediate.

d

In sulphonation, SO3 is electrophile.

answer is B.

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Detailed Solution

H2SO4 acts as an acid, HNO3 acts as a base.

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