Q. Black Jack is an ore of
A) Cr
B) Sn
C) Zn
D) Ni
Explanation
(c)
Black Jack is an ore of zinc. Other ores of zinc are zincite (ZnO), calamine ($ZnCO_{3}$), zinc blende or black jack $(ZnS)$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.