In which one of the following processes the reactants and catalyst exist in three different states ?

Options

A. Haber's process
B. Ostwald's process
C. Hydrogenation of vegetable oil
D. Contact process

Answer

C

Explanation

During hydrogenation of vegetable oil the reactanst and catalyst can exist in different states vegetable oil which is an poly unsaturated hydrocarbon may be converted from liquid to solid by hydrogenation reaction. The degree of hydrogenation of unsaturated oil controls the final consistency of the product.