Which of the following is non-polar?

Identify the incorrect statement $:-$

Which of the following is a non-polar solvent?

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?

$PCl_3Br_2$ exhibits geometric isomerism,and its geometric isomers are shown below. Which of these does not have a dipole moment?

In a polar molecule,the ionic charge is $4.8 \times 10^{-10} \ e.s.u.$ If the inter ionic distance is $1 \ \mathring{A}$,then the dipole moment is ........ $debye$.