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Roasting is carried out in case of

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Iron pyrites

Copper glance

All

Galena

answer is D.

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Detailed Solution

Roasting is carried out in all given cases and the process is used to convert the metal ores into their oxides in presence of air.
Galena, iron pyrites, copper glance are the sulphide minerals.
Sulphide ores are extracted by roasting process.

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