Question

Which of the following is not an ore of magnesium?

• A. Magnesite
• B. Dolomite
• C. Gypsum
• D. Carnallite

Answer 1

Answer: (C)

Gypsum $\text{(CaS}{\text{O}}_4\text{.2}{\text{H}}_2\text{O)}$ is an ore of calcium. Dolomite $\text{(CaS}{\text{O}}_3\text{.MgC}{\text{O}}_3\text{),}$ magnesite $(MgC{O}_3)$ and camallite $(KCl.MgC{l}_2.6H_{2}O)$ are the ores of magnesium.