Question

A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.

Answer 1

A displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.

Example: $$\begin{gathered} \mathrm{Zn}\left(\mathrm{s}\right)+{\mathrm{CuSO}}_4\left(\mathrm{s}\right)\to \mathrm{Cu}\left(\mathrm{s}\right)+{\mathrm{ZnSO}}_4\left(\mathrm{s}\right) \\ \mathrm{Zinc}\mathrm{Copper}\mathrm{sulphate}\mathrm{Copper}\mathrm{Zinc}\mathrm{sulphate} \end{gathered}$$

In this reaction, zinc being highly reactive displaces copper which is less reactive.