Assertion (A): Aniline hydrogen sulphate on heating forms p-amino benzene sulfonic acid.
Reason (R): The sulfonic acid group is an electron-withdrawing and ring-deactivating group

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(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

Both (A) and (R) are true and (R) is not the correct explanation of (A)

answer is B.

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Detailed Solution

Heating of aniline hydrogen sulphate,

The above para product is due to the ortho and para-directing nature of the amine group.

Also, due to the -M effect, the sulfonic acid group is an electron-withdrawing and ring-deactivating group.

Thus, both assertion and reason are correct but the reason is not the correct explanation.

Hence, option (B) is correct.

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