alleryWhich catalyst is used in the hydrogenation of vegetable oils to make Vanaspati ghee?
ASodium
BNickel
CManganese
DCopper
Answer & Solution
Correct answer: B. Nickel
1. Unsaturated oils undergo addition of hydrogen across their double bonds.
2. This addition needs a catalyst such as platinum or nickel.
3. Industrial hydrogenation of vegetable oils uses a nickel catalyst.
4. Rule out A: sodium reacts with the -OH group of alcohols, not as a hydrogenation catalyst.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 9 "Carbon Compounds", p.135_
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