Q. Which of the following metals cannot be extracted by carbon reduction process?

A) Zn
B) Al
C) Hg
D) Pb
Explanation

(b)
Al is highly electropositive. It can be obtained only by electrolytic reduction

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.