Compare the boiling points of ethers with alkanes and alcohols.

(N/A) The $C-O$ bond in ethers is polar,and due to the angular shape of the ether molecule,it possesses a net dipole moment. Consequently,ethers have slightly higher boiling points than alkanes of comparable molecular mass.
However,ethers have significantly lower boiling points than alcohols of comparable molecular mass. This is because alcohols can form intermolecular hydrogen bonds,whereas ethers cannot.
The order of boiling points for compounds of comparable molecular mass is: $Alkane \approx Ether < Alcohol$.