Question

explain the process of hydrogenation maintain the essential condition for the reaction and said that changed in the physical property with the formatting of the product

Answer 1

Hydrogenation is the addition of hydrogen in the unsaturated carbon chain to convert into saturated.
Unsaturated means a carbon chain containing double or triple bond whereas saturated means single bond is present only

Answer 2

The addition of hydrogen to an unsaturated hydrocarbon in presence of a nickel catalyst to obtain a saturated hydrocarbon is known as hydrogenation. .....
The product becomes semi- solid