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3. Explain the following terms with examples. d. Displacement reaction
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The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by formation of its own ions, is called displacement reaction.


on adding zinc dust to blue coloured copper sulphate solution, a colourless solution of zinc sulphate is formed and heat is generated .

CuSO4(aq) + Zn (s) ZnSO4(aq) + Cu(s)

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