Assertion (A): $N$ - alkyl benzene sulphonamide is soluble in alkali.
Reason (R): The hydrogen attached to nitrogen in sulphonamide is strongly acidic due to the presence of a strong electron withdrawing sulfonyl group.

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

(A) is true but (R) is false

Both (A) and (R) are false

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

answer is A.

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Detailed Solution

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due to the presence of a strong electron-withdrawing group the hydrogen atom attached to nitrogen is very acidic in nature,

Due to this acidic hydrogen, $N$ - alkyl benzene sulphonamide is soluble in alkali.

Thus, both assertion and reason are true and the reason is the correct explanation of assertion.

Hence, option (A) is correct.

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