NDA 2022 Chemistry question

Liquid vegetable oils are converted to solid margarine by the use of

(A)hydrogen gasCorrect
(B)chlorine gas
(C)carbon dioxide gas
(D)oxygen gas

Answer: (A)

Solution

Vegetable oils are unsaturated: their carbon chains contain double bonds. When hydrogen gas is passed through the oil in the presence of a nickel catalyst, hydrogen adds

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Question ID VK-032247