" The molecule having zero dipole moment is : "

The molecule having non-zero dipole moment is

Molecule with zero dipole moment is

The molecule which has zero dipole moment is :

The molecule having permanent dipole moment is

The molecule having permanent dipole moment is

The number of molecules having zero dipole moment is trans-but-2-ene, cis-pent-2-ene, cis-but-2-ene, propene, trans-1,2-dichloroethene, but-2-yne, cis-1,2-dichloroethene

The molecules having dipole moment are :

The molecules having dipole moment are :

The molecule which has zero dipole moment is