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Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly? i. Metal sulphides are less stable than the corresponding oxides. ii. CO2is more volatile than CS2. iii. Metal sulphides are thermodynamically more stable than CS2. iv. CO2is thermodynamically more stable than CS2.

Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting
the sulphide ores to carbon reduction directly?
i. Metal sulphides are less stable than the corresponding oxides.
ii. CO2is more volatile than CS2.
iii. Metal sulphides are thermodynamically more stable than CS2.
iv. CO2is thermodynamically more stable than CS2.

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2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Dear student

The answer is option c

Regards
Vikas TU
14149 Points
3 years ago
Hello StudentMetal sulphides are more stable than corresponding oxides and that is why it is more difficult to extract metal from sulphide ore. To make the extraction easy and economical , first these sulphides are converted into corresponding oxides and from these oxides metal is easily extracted by reducing them with carbon.

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