A) Gypsum
B) Dolomite
C) Magnesite
D) Carnallite
Correct Answer: A
Solution :
Dolomite\[(MgCaC{{O}_{3}})\], Magnesite \[(MgC{{O}_{3}})\] and carnallite \[(KCl.MgC{{l}_{2}}\cdot 6{{H}_{2}}O)\] are the ores of magnesium.
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