Question

The compound that will have a permanent dipole moment among the following is

• A. $I$
• B. $II$
• C. $III$
• D. $IV$

Answer 1

Answer: (A)

$I$

Answer 2

Symmetrical molecules and symmetrical trans-alkene have a net dipole moment zero.
$CH _{2} Cl _{2}$ is not a symmetrical molecule, thus it will have a permanent dipole.