Liquid vegetable oils are converted to solid margarine by the use of
[amp_mcq option1=”hydrogen gas” option2=”chlorine gas” option3=”carbon dioxide gas” option4=”oxygen gas” correct=”option1″]
This question was previously asked in
UPSC NDA-2 – 2022
The correct answer is hydrogen gas.
Liquid vegetable oils are typically unsaturated fats, meaning they contain carbon-carbon double bonds. To convert these liquid oils into solid or semi-solid fats like margarine, hydrogen gas is added across the double bonds in the presence of a catalyst (usually nickel, palladium, or platinum). This process is called hydrogenation.