1.

Blister copper is refined by stirring moltem impure metal with green logs of wood because such a wood liberated hydrocarbon gases like (CH_(4)). The process X is called _____ and the Metal contains impurity of Y is ____:

Answer»

X = POLING, `Y=cuO_(2)`
X = CUPELLATION, `Y=CuO`
X = cupellation, `Y=ZnO`
X = poling, `Y=Cu_(2)O`

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