Which of the following compounds has a zero dipole moment?

If the dipole moment of chlorobenzene is $\mu$,what is the dipole moment of $1,3,5$-trichlorobenzene?

Identify the compound having a non-zero dipole moment.

Carbon tetrachloride has no net dipole moment because of

Experiments show that the $H_2O$ molecule has a dipole moment,while $CO_2$ does not. Which of the following structures best represents this fact?

What is the increasing order of dipole moment for the following compounds? $(i)$ Toluene $(ii)$ $m$-dichlorobenzene $(iii)$ $o$-dichlorobenzene $(iv)$ $p$-dichlorobenzene