JEE Main 2008

Exam: JEE Main
Year: 2008
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

JEE Main 2008 · Chemistry · General Principles and Processes of Isolation of Metals

Which of the following factors is of no significance for roasting...

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?

Options

AMetal sulphides are thermodynamically more stable than $\mathrm{CS}_2$
B $\mathrm{CO}_2$ is thermodynamically more stable than $\mathrm{CS}_2$
CMetal sulphides are less stable than the corresponding oxides
D $\mathrm{CO}_2$ is more volatile than $\mathrm{CS}_2$

Correct answer

A. Metal sulphides are thermodynamically more stable than $\mathrm{CS}_2$

Step-by-step solution

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