Question

When hydrogen burns in oxygen water is formed and when water is electrolysed then hydrogen and oxygen are produced what type of reaction are occuring is relation between these reaction

Answer 1

2H2+O2-->2H2O
This is a combination reaction in which multiple reactants reacts to form a single product.

2H2O--->2H2+O2
This is a decomposition reaction in which single reactant decomposed to form multiple products.

Answer 2

2H2 + O2 ->2H2O
formation of water- addition reaction
2H2O-> 2H2 + O2
electrolysis of water-decomposition reaction