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Q.

Which of the following is a wrong statement?

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a

The electrophile in sulphonation is H2SO4

b

In the nitration of toluene by electrophilic substitution the electrophile is nitronium ion

c

Reaction of benzene with chlorine in the presence of sunlight is an addition reaction

d

In Friedel-crafts reaction of benzene with an acid chloride the electrophile reagent is RCO+

answer is A.

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Detailed Solution

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(A) In sulfonation of benzene SO3 acts as an electrophile and accepts a pair of pi electrons from Benzene 

H2SO4 + H2SO4 H3O+ + SO3 +HSO-4

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