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Blister copper is refined by stirring mo...

Blister copper is refined by stirring molte impure metal with green logs of wood because such a wood liberates hydrogen gases `(like CH_(4))`. This process X is called…..and the metal contains impurities of Y is…

A

X=cupellation, Y=`CuO_(2)`

B

X=poling,Y=`Cu_(2)O`

C

`X=poling, Y=CuO

D

X=Cupellatio, Y=CuO

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The correct Answer is:
B
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