Verified Answer :

combustion in case if slowly oxidised or burning if sudden

Answer: The reaction happening in bunsen burner is a combustion reaction.

Explanation:

The gas released from bunsen burner is mainly methane.

Combustion reaction is defined as the reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water molecule.

\(\text{Hydrocarbon}+O_2\rightarrow CO_2+H_2O\)

The chemical equation for the combustion of methane follows:

\(CH_4+2O_2\rightarrow CO_2+2H_2O\)

Hence, the reaction happening in bunsen burner is a combustion reaction.