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Question

Copper is extracted from copper pyrites ore by heating in a blast furnace. The method is based on the principle that:

A
copper has more affinity for oxygen than sulphur at high temperature
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B
iron has more affinity for oxygen than copper at high temperature
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C
sulphur has less affinity for oxygen at high temperature
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D
copper has less affinity for oxygen than sulphur at high temperature
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Solution

The correct option is A copper has more affinity for oxygen than sulphur at high temperature
Copper is extracted from pyrites are heating in blast furnace. This method is based on the principle that copper has high affinity for oxygen than sulphur at high temperature.
2Cu2S+3O22Cu2O+2SO2
2Cu2O+Cu2S6Cu+SO2

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