What is hydrogenation? what is its industrial application?

Explanation

The addition of hydrogen to unsaturation hydrocarbon in the presence of a catalyst is calcium hydrogenation.
`underset("Ethyne")(H-C-=C-H)+2H_(2)underset(473K)overset(Ni//H_(2))tounderset("Ethane")(CH_(3)CH_(3))`
The reaction is extremely useful in the hydrogenation of oils. The edible oils which are used for cooking are most groundnut oil, cotton oil etc. These are unsaturation compounds. These are hydrogenated to prepare solid which is known as vanaspati ghee in the industries.
`"Edible oils" +H_(2)overset(Ni//Delta)to"Fats"`.