Why is 4-nitrophenol less volatile than 2-nitrophenol?
4-Nitrophenol has intermolecular hydrogen bonding, increasing intermolecular forces and reducing volatility, while 2-nitrophenol has intramolecular hydrogen bonding, making it more volatile.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification