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Which of the following is an example displacement reaction?


Options:
A .   CaCO3(s) Heat CaO(s) + CO2(g)
B .   2Mg(s) + O2(g)  2MgO(s)
C .   Fe(s) + CuSO4(aq) FeSO4(aq) + Cu(s)
D .   N2(g)+H2(g)2NH3(g)
Answer: Option C
:
C
The reaction in which a more reactive element displaces a less reactive element from its compound or salt solution is called a displacement reaction.
Among the given options only in the reaction between iron and copper sulphate, iron (Fe) being more reactive displaces copper (Cu) from its solution.

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