Q. 2 Observing the action of Zn, Fe, Cu and Al metals on the following salt solutions : (a) ZnSO4 (aq) (b) FeSO4 (aq) (c) CuSO4 (aq) (d) Al2(SO4)3 (aq) Arranging Zn, Fe, Cu and Al (metals) in the decreasing order of reactivity based on the above result. # fiziks questions