Reactive metals can displace less reactive metals from their compounds in solution or molten form. all metals are not equally reactive. We checked the reactivity of various metals with oxygen, water and acids. But all metals do not react with these reagents. Displacement reactions give better evidence about the reactivity of metals. It is simple and easy if metal A displaces metal B from its solution, it is more reactive than B. The reactivity series is a list of metals arranged in the order of their decreasing activities.

(i).Which of the following is the correct
arrangement of the given metals in
dscending order of their reactivity? Zinc,
Iron, Magnesium, Sodium
(a)Sodium > Magnesium > Zinc > iron
(b) Sodium > Magnesium > Zinc > iron
(c) Sodium > Magnesium > Zinc > iron

(ii).Which of the following pairs will give
displacement reactions?
(a) CuSO4 solution and Silver metal
(b) AgNO3 solution and Copper metal
(c) NaCl solution and Copper metal

(iii).Which of the following pairs of
reactants will go undergo a displacement
reaction?
(a) CuSO4 + Fe
(b) MgSO4 + Fe
(c) Ca(SO4 )2 + Fe