If $HCl$ molecule is completely polarized,the expected value of the dipole moment is $6.12 \ D$,but the experimental value of the dipole moment is $1.03 \ D$. Calculate the percentage ionic character.

Number of compounds from the following with zero dipole moment is . . . . . .
$HF, H_2, H_2S, CO_2, NH_3, BF_3, CH_4, CHCl_3, SiF_4, H_2O, BeF_2$

Which of the following molecules have non-zero dipole moments?
$I$. Gauche conformation of $1, 2$-dibromoethane
$II$. Anti conformation of $1, 2$-dibromoethane
$III$. Trans-$1, 4$-dibromocyclohexane
$IV$. Cis-$1, 4$-dibromocyclohexane
$V$. Tetrabromomethane
$VI$. $1, 1$-dibromocyclohexane

The total number of molecules with zero dipole moment among $CH_4$,$BF_3$,$H_2O$,$HF$,$NH_3$,$CO_2$,and $SO_2$ is $ . . . . . . $.

Which among the following molecules is non-polar?

Which of the following molecules has the most polar covalent bond?