Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
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Carbon and hydrogen are suitable reducing agent for metal sulphides
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The ΔfGo of the sulphide is greater than those for CS2 and H2S
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The ΔfGo is negative for roasting of sulphide ore to oxide
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Roasting of the sulphide to the oxide is thermodynamically feasible
