Assertion (A) o-nitrophenol is less soluble in water than the m- and p-isomers.
Reason (R) m and p-nitrophenols exist as associated molecules.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Solution

Answer: (e). Both assertion and reason are correct statements but the reason is not a correct explanation of assertion.
Correct Explanation (R): Due to the presence of intramolecular hydrogen bonding, o-nitrophenol does not form hydrogen bonds with $H_{2} O$ but meta and para-nitrophenol form hydrogen bonds with water.

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