The molecule with the highest dipole moment among the following is

Which molecule has both non-polar and polar bonds,but the molecule as a whole is polar?

Which bond angle $\theta$ gives maximum dipole moment for a triatomic molecule $XY_2$?

Which of the following compounds has the highest dipole moment?

Consider the following:
Assertion $(A)$: Dipole moment of $NF_3$ is lesser than $NH_3$.
Reason $(R)$: In $NF_3$,the orbital dipole due to lone pair of electrons is in the opposite direction to the resultant dipole moment of the three $N-F$ bonds.
The correct answer is:

Consider the following compounds in the liquid form:
$O_2, HF, H_2O, NH_3, H_2O_2, CCl_4, CHCl_3, C_6H_6, C_6H_5Cl$.
When a charged comb is brought near their flowing stream,how many of them show deflection as per the figure?