Q. Which of the following is not an ore of magnesium?
A) Carnallite
B) Dolomite
C) Calamine
D) Sea water
Explanation
(c)
Carnallite $\left( KCl\ .\ MgCl_{2}\ .\ 6H_{2}O \right),$ dolomite $\left( MgCO_{3}\ .\ CaCO_{3} \right)$ and sea water are the ores of magnesium, calamine $\left( ZnCO_{3} \right)$ is an ore of zinc.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.