(A) Aryl sulphonic acid gives phenol on reacting with NaOH at high temperature
(R) This reaction is electrophilic substitution reaction

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Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

‘A’ is false and ‘R’ is false

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

‘A’ is true and ‘R’ is false

answer is C.

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Detailed Solution

The reaction of reacting aryl sulphonic acid with NaOH at high temperature is an example of nucleophilic reaction which occurs through addition-elimination mechanism. In the given reaction, ${SO}_{3}^{2 -}$ acts as a leaving group.

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