Out of the following ores, how many ores do not contain more than one metal in their composition.
Argentite, Barytes, Magnesite, Fluorspar, Carnalite, Dolomite, Chalcocite, Asbestos, Calamine.

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Solution

The correct option is A 6
Ore Chemical Formula
Argentite $A g_{2} S$
Barytes $B a S O_{4}$
Magnesite $M g C O_{3}$
Fluorspar $C a F_{2}$
Carnalite $K C l . M g C l_{2} .6 H_{2} O$
Dolomite $M g C O_{3} . C a C O_{3}$
Chalcocite $C u_{2} S$
Asbestos Six minerals are defined as "asbestos", so it contains
more than one metal.
Calamine $Z n C O_{3}$

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Out of the following ores, how many ores do not contain more than one metal in their composition. Argentite, Barytes, Magnesite, Fluorspar, Carnalite, Dolomite, Chalcocite, Asbestos, Calamine.

The correct option is A 6Ore Chemical FormulaArgentite Ag2SBarytes BaSO4Magnesite MgCO3Fluorspar CaF2Carnalite KCl.MgCl2.6H2ODolomite MgCO3.CaCO3Chalcocite Cu2SAsbestos Six minerals are defined as "asbestos", so it contains more than one metal.Calamine ZnCO3

Out of the following ores, how many ores do not contain more than one metal in their composition.
Argentite, Barytes, Magnesite, Fluorspar, Carnalite, Dolomite, Chalcocite, Asbestos, Calamine.