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Roasting

Which among t...

Question

Which among the following set of metal ores can undergo roasting?

Ag, Cu, Pb

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Ag, Cu, Sn

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Ag, Mg, Pb

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Al, Cu, Pb

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Solution

The correct option is A Ag, Cu, Pb
Roasting is a process of heating the concentrated ore at the temperature below its melting point in the presence of air.
This process is mainly used for sulphide ores to convert them into their respective oxides. The ores of respective metals are given below:
Cu (Copper): ${CuFeS}_{2}$ (Copper iron pyrites)

Ag (Silver): ${Ag}_{2} S$ (Argentite)

Pb(Lead): $PbS$ (Galena)

The given metals have sulphide ores and hence these ores undergo roasting.

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