Hydrogenation of vegetable oils using nickel catalyst is an example of
Substitution reaction.
Elimination reaction.
Addition reaction.
Free-radical polymerization.
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-1 – 2021
Hydrogenation is a chemical reaction that involves the addition of hydrogen gas (Hโ) to a compound. Vegetable oils are unsaturated fats containing carbon-carbon double bonds (C=C). In the presence of a catalyst like nickel, hydrogen atoms add across these double bonds, converting them into single bonds (C-C) and making the oil saturated or partially saturated (like in the production of vanaspati ghee). This type of reaction, where atoms are added across a double or triple bond, is an addition reaction.
Addition reactions are characteristic of unsaturated compounds (alkenes, alkynes, etc.). Hydrogenation specifically involves the addition of hydrogen. Catalysts (like Ni, Pt, or Pd) are typically used to speed up the reaction rate.