Question

Assertion: o-nitrophenol is more volatile than p-nitrophenol.

Reason: Intramolecular hydrogen bonding is present in o-nitrophenol while intermolecular H - bonding is in p-nitrophenol.

(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 correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is: (a)

Explanation:

p-nitrophenol has higher boiling point than o-nitrophenol, because intermolecular hydrogen bonding present in p-nitrophenol. But intramolecular hydrogen bonding in o-nitrophenol affects the boiling point which makes it steam volatile.