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Question

Roasting is used to process which of the following ores?


A

Oxide ores

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B

Silicate ores

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C

Sulphide ores

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D

Carbonate ores

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Solution

The correct option is C

Sulphide ores


Roasting:The process of heating the ores strongly in presence of oxygen, during which Sulfide is converted to an oxide and sulfur is released as sulfur dioxide a gas.

2Cu2S+3O22Cu2O+2SO2

2ZnS+3O22ZnO+2SO2


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