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A sulphide ore like ZnS is first roasted...

A sulphide ore like `ZnS` is first roasted into its oxide prior to reduction by carbon because:

A

a sulphide ore cannot be reduced to metal at all

B

no reducing agent is found suitable for reducing a sulphide ore

C

the enthalpy of formation of `CO_(2)` is more than that of `CS_(2)`

D

a metal oxide is generally less stable than the metal sulphide

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The correct Answer is:
d
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A sulphide ore is first converted into its oxide before reduction. This is done because :

A sulphide ore is converted into metal oxide by the process of:

Assertion: Sulphide ores of Zn and Pb are generally converted into their respective oxides, prior to reduction. Reason: The zinc oxide and lead oxide are reduced by carbon to their respective free metals.

Why are sulphide ores converted to oxide before reduction?

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