MetallurgyMediumBloom L3
Question
Blister copper is refined by stirring molten impure metal with green logs of wood because such a wood liberates hydrocarbon gases (like CH4). This process X is called ………... and the metal contains impurities of Y is ………...
Options
A.X = cupellation, Y = CuO2
B.X = poling, Y = Cu2O
C.X = poling, Y = CuO
D.X = cupellation, Y = CuO
Solution
Sol. Polling is used to refine copper. Green wood logs are used to reduce impurity of Cu2O is reduced to copper by hydrocarbons present in green wood logs.
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