Multiple Choice Question Answer XII — task. Science CBSE, Class 10.

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1. Carnallite is

\(KCl\), \(MgCl_2\)
\(KCl\), \(MgCl_2\), \(3H_2O\)
\(KCl\), \(MgCl_2\), \(6H_2O\)
\(KCl\), \(MgCl_2\), \(H_2O\)

2. Removal of impurities from ore is known as

Crushing and grinding
Concentration of ore
Gangue
Minerals

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