The answer is attached below.
Work Step by Step
Alkenes go through hydrogenation reactions in which the double bond in alkenes is converted to a single bond by the addition of Hydrogen atoms in the presence of a catalyst. ie. C=C --> C-C. In this reaction, H atoms are added across the C=C to form CH3-CH2-. In this way, an unsaturated hydrocarbon is converted into a saturated hydrocarbon.