Write about the boiling points of aldehydes and ketones.

(N/A) Physical state at room temperature: Methanal is a gas at room temperature. Ethanal is a volatile liquid. Other aldehydes and ketones are liquid or solid at room temperature.
$(b)$ The boiling points of aldehydes and ketones are higher than those of hydrocarbons and ethers of comparable molecular masses. This is due to weak molecular association in aldehydes and ketones arising out of the dipole-dipole interactions.