Q. Polar molecules are the molecules:
A) acquire a dipole moment only in the presence of electric field due to displacement of charges.
B) acquire a dipole moment only when magnetic field is absent.
C) having a permanent electric dipole moment.
D) having zero dipole moment.
Explanation
[Solution] Polar molecules (e.g. $H_2O$) have a permanent electric dipole moment because their charge centres do not coincide. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.