Question

Give one example each of displcement decomposition and combination reaction with explaination

Answer 1

Decomposition reaction is a reaction in which a more reactive metal displaces a less reactive metal from its salt solution.
Example - CuSO4 + Fe -----) FeSO4 + Cu
In this reaction Iron(Fe) displaces a less reactive metal Copper(Cu) from its salt solution.
Combination reaction is a reaction in which two or more elements combine together to form a single substance.
Example - C + O2 -------) CO2
In this reaction Carbon (C) combines with oxygen ( O2) to form a single substance carbon dioxide (CO2)