Which of the following statements about the advantage of roasting of sulphide ore before reduction is not true

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ΔGf∘of the sulphide is greater than CS2 and H2S

ΔGf∘is negative for roasting of sulphide ore to oxide

Roasting of the sulphide to oxide is thermodynamically feasible

Carbon and hydrogen are suitable reducing agents for metal sulphides

answer is D.

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Detailed Solution

ΔGf∘for sulphides ΔGf∘ of CS2 and H2S Thus, C and H2 cannot reduce metal sulphide.

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