From a solution of copper sulphate, the ...

From a solution of copper sulphate, the metal used to recover copper, is 1)Na 2)Ag 3)Hg 4)Zn

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1 lectropitative metal (`Zn, Fe` etc ) precipitate copper from a solution of copper sulphate
` CuSO_4 + Zn to Cu + Zn SO_4 `

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