Which of the following molecules has a zero dipole moment?

The observed dipole moment of $HCl$ is $1.303 \ D$. This indicates that $HCl$ has $17 \%$ ionic and $83 \%$ covalent character. The bond length of $HCl$ is $1.26 \ \mathring{A}$ and the charges on $H$ and $Cl$ ions are $+e$ and $-e$. Calculate the theoretical dipole moment in $D$.

Which of the following has been arranged in order of decreasing dipole moment?

Which has maximum dipole moment?

Which of the following best represents the charge distribution in iodine monochloride $(ICl)$?

Which of the following bonds is the most polar?