Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
(a) Addition reaction
(b) Substitution reaction
(c) Displacement reaction
(d) Oxidation reaction
Answer: (a)
Solution:
Oils are unsaturated compounds containing double bonds. Unsaturated compounds are the only one which can undergo addition reaction.
The reaction is known as hydrogenation reaction. For example:
Hydrogenation reactions are addition reactions.
Therefore, option (a) is correct.