Process of hydrogenation `:`
The addition of hydrogen to an unsaturated hydrocarbon is called hydrogenation.
Essential conditions for the reaction are `:`
(i) Presence of an unsaturated hydrocarbon.
(ii) Presence o fa catalyst such as nickel (Ni) or palladium.
Change observed `:`
Change observed in the physical property is the change of unsaturated compound from the liquid state to saturated compound in solid state.
The boiling or melting points of a product is increased.