4. What is alcohol, phenol, and ether as given by Class 12 Alcohols, phenols and ethers notes?
Ans- In alcohols a hydroxyl group is attached to a saturated carbon atom in alcohol, which is an organic molecule. Phenol is an organic compound formed when a hydrogen atom in a benzene molecule is replaced by a -OH group. Ether is an organic molecule composed of two aryl or alkyl groups joined by an oxygen atom. This is mentioned in Class12 Alcohols , phenols and ethers notes.