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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
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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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