In order to refine blister copper , it melts in a furnance and is stirred with green logs of wood . The purpose is
In order to refine blister copper , it melts in a furnance and is stirred with green logs of wood . The purpose is
A. to expel the dissoved gases in blister copper
B. to bring the impurities to surface and oxidise them
C. to increase the carbon content of copper
D. to reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood
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Correct Answer - D
`2Cu_(2)S+3O_(2) to 2Cu_(2)O+2SO_(2) `
`3Cu_(2)O+ underset("From green logs of wood")(CH_(4)) to 6Cu+2H_(2)O+CO`
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