A student performed the following displacement reaction:
Fe(s) + CuSO4(aq) = FeSO4(aq) + Cu (s)
Zn(s) + FeSO4(aq) = ZnSO4(aq) + Fe (s)
2Al (s) + 3ZnSO4(aq) = Al2(SO4)3(aq) + 3 Zn(s)
Arrange the followings in the increasing order of their reactivity:
(1) Al > Zn > Fe > Cu (2) Fe > Cu > Zn > Al
(3) Zn > Cu > Fe > Al (4)Al > Zn > Cu > Fe
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