Q.

Assertion (A): Chlorobenzene is more reactive than benzene towards fridel craft alkylation.
Reason (R): Positive mesomeric effect of chlorine governs the orientation effect of electrophilic aromatic substitution (EAS) reactions on benzene.
 Find the true relation from the following.

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a

A and R are true but R is not the correct explanation of A

b

A is wrong but R is true

c

A and R are true and R is correct explanation of A

d

A is true but R is wrong

answer is D.

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Detailed Solution

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Reactivity govern by negative inductive effect but orientation govern by positive  mesomeric effect.

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