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Question
Reaction of iron nails with copper sulphate solution is an example of
(a) Combination reaction
(b) Decomposition reaction
(c) Displacement reaction
(d) Double displacement reaction
Solution
(c) Displacement reaction
When a more reactive element removes another element having less reactivity from its compound, the reaction is termed a displacement reaction.
In the reaction of iron nails with copper sulphate solution, iron displaces copper from the copper sulphate solution.
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
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