Q. Of the following, which cannot be obtained by electrolysis of the aqueous solution of their salts?
A) Cu
B) Ag
C) Mg and Al
D) Cr
Explanation
(c)
Mg and Al cannot be obtained by the electrolysis of aqueous solution of their salts because instead of metal, $H_{2}$ gas is liberated at cathode
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.