JEE Main Chemistry question

During hydrogenation of oils, the higher-melting 'vegetable ghee' is formed because:

(A)Hydrogen is dissolved in the oil
(B)Hydrogen combines with oxygen of the oil
(C)Esters of unsaturated fatty acids are reduced to those of saturated acidsCorrect
(D)Hydrogen drives off the impurities from oil

Answer: (C)

Solution

Catalytic hydrogenation adds across the C=C double bonds of the unsaturated fatty acid chains in the oil's glyceride esters, converting them into the corresponding saturated-acid esters, which pack more efficiently and so have a higher melting

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Question ID VK-151060