1.

Themetalwhichcanbeusedtoobtainmetallic Cu fromaqueousCuSO _4solution is

Answer»

Na
AG
Hg
FE

Solution :AlthroughbothNaand FEARE moreelectropositivethatCubutNareactswith` H_2 O`and henceFeis usedtoextractCu from ` CU SO_4`
` Cu SO_4 (aq)+ Cu (s)`


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