Question

give one example each of displacement, decomposition and combination reaction with explanation​

Answer 1

displacement is highly reactive metal displaces low reactive metal.

zn+cuso4=znso4+cu

decomposition reaction is a compound splits into product

caco3=cao + co2

combination reaction means reactants combine to form a product

c+o2=co2

Answer 2

this is the answer.
this will help you