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Q.
Which of the following is not an ore of magnesium?
KCETKCET 2006General Principles and Processes of Isolation of Elements
Solution:
Carnallite $\left( KCl \cdot MgCl _{2} \cdot 6 H _{2} O \right)$, dolomite
$\left( MgCO _{3} \cdot CaCO _{3}\right)$ and sea water are the ores of magnesium. Calamine $\left( Zn CO _{2}\right)$ is an ore of zinc.