Question

What is composition reaction

Answer 1

A composition reaction produces a single substance from multiple reactants. Adecomposition reaction produces multiple products from a single reactant. Combustion reactions are the combination of some compound with oxygen to make oxides of the other elements as products (although nitrogen atoms react to make N 2).

Answer 2

When two reactant make single product then its known as a composition reaction.
eg: 2O+ 2H----->2H2O