Among the following,the molecule with the lowest dipole moment is

The critical temperature of water is higher than that of $O_2$ because $H_2O$ molecules have ......

Although both $CO_{2}$ and $H_{2}O$ are triatomic molecules,the shape of $H_{2}O$ molecule is bent while that of $CO_{2}$ is linear. Explain this on the basis of dipole moment.

Which compound among the following will have a permanent dipole moment?

In terms of polar character,which of the following orders is correct?

Which molecule is polar?