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Question

Chemistry Question on General Principles and Processes of Isolation of Elements

Which of the following is not an ore of magnesium?

A

Carnallite

B

Dolomite

C

Calamine

D

Sea water

Answer

Calamine

Explanation

Solution

Carnallite (KCl⋅MgCl2⋅6H2O)\left( KCl \cdot MgCl _{2} \cdot 6 H _{2} O \right), dolomite
(MgCO3⋅CaCO3)\left( MgCO _{3} \cdot CaCO _{3}\right) and sea water are the ores of magnesium. Calamine (ZnCO2)\left( Zn CO _{2}\right) is an ore of zinc.