Which of the following series of steps correctly represents the extraction of metals of low reactivi….

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Which of the following series of steps correctly represents the extraction of metals of low reactivity from ores?

Options :-

1. Ore Concentration of ore Sulphide ore Roasting Oxide of metal  Auto-reduction  Purification of metal 
2. ^{_{Ore Concentration of ore Oxide of metal Sulphide ore Roasting Reduction of metal Purification of metal}}
3. ^{_{Ore Concentration of ore Oxide of metal Carbonate ore Sulphide ore Reduction of metal Purification of metal}}
4. Ore Concentration of ore Roasting Sulphide ore Oxide of metal  Auto-reduction  Purification of metal

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