Question

what is displacement reaction give reason​

Answer 1

A displacement reaction is a reaction in which an atom, or a group of atoms, present in a molecule is displaced by another atom. For example, iron when added to a solution of copper sulphate displaces copper metal.

Answer 2

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.

Example : Reaction of iron nails with copper sulphate solution.