Question

Aldehydes and ketones have higher boiling point than, 

Alcohols
Ethers
Carboxylic Acids
Phenols​

Answer 1

Explanation:

The boiling points of carboxylic acids are higher than the comparable molecular masses of aldehydes, ketones, and alcohols. The reason for such behaviour is the ability of carboxylic acids molecules to extensively associate with each other through intermolecular hydrogen bonding.

Answer 2

I think ether because in other option H bonding possible