Question

Polar molecules are the molecules :

(1) having zero dipole moment.

(2) having permanent electric dipole moment.

(3) acquire a dipole moment only when magnetic field is absent.

(4) acquire a dipole moment only in the presence of electric field due to displacement of charges.

Answer 1

Ans: (2) having permanent electric dipole moment.

Explanation: Polar molecules have positive center and negative charge seperated by some distance, so they have permanent dipole moment.