Which of the following is not an example of heterogeneous catalytic reaction ?
Combustion of coal
Hydrogenatoin of vegetable oils
Heterogeneous Catalysis -
The catalytic process in which the reactants and the catalyst are in different phases is known as heterogeneous catalysis
As we have learned in combustion we do not require any catalyst forf the combustion of coal.
Combustion of coalOption 3)
Hydrogenatoin of vegetable oilsOption 4)