$H_2O$ is dipolar, whereas $BeF_2$ is not. It is because:-

Question

( A ) $H_2O$involves hydrogen bonding whereas $BeF_2$ is a discrete molecule
( B ) $H_2O$ is angular and $BeF_2$ is linear
( C ) $H_2O$ is linear and $BeF_2$ is angular
( D ) The electronegativity of F is greater than that of O