Question

Given below are two statements labelled as Assertion (A) and Reason (R).
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. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is B Both A and R are true but R is not the correct explanation of A

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.