Q. Which of the following does not conduct electricity?
A) Fused NaCl
B) Solid NaCl
C) Brine solution
D) Copper
Explanation
(b)
Solid $NaCl$ does not conduct electricity due to absence of free ions.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.