Question

Definition and Ex.
1)Combination reaction
2)Decomposition reaction
3)Desplacement reaction
4)Double-Desplacement reaction ​

Answer 1

Answer:

1) a reaction in which 2 or more substances join to form a single product.

eg: H2 + O2----> H2O

2) a reaction in which 1 reactant breaks into 2 or more products

eg: HCl----> H2 + Cl2

3) a reaction in which more reactive element displaces a less reactive element.

eg: Fe + CuSO4----> FeSo4 + Cu

4) a reaction in which the change of ions takes place.

eg: MgO + HCl----> MgCl + H2O

Answer 2

hope it helps

please mark me as the brainliiest