Question

Assertion: Boiling point of $p$-nitrophenol is greater than that of $o$-nitrophenol.
Reason: There is intramolecular hydrogen bonding in $p$-nitrophenol and intermolecular hydrogen bonding in $o$-nitrophenol.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

There is intermolecular hydrogen bonding in $p$-nitrophenol and intramolecular hydrogen bonding in $o$-nitrophenol. As intramolecular hydrogen bonding in $o$-nitrophenol prevents further association, it has lower boiling point than $p$-nitrophenol.