Q.

The gas that is used in the manufacture of vanaspati ghee is -

A. Oxygen
B. Carbon dioxide
C. Hydrogen
D. Nitrogen
Answer» C. Hydrogen
Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. The process is commonly employed to reduce or saturate organic compounds. The largest scale application of hydrogenation is for the processing of vegetableoils (fats to give margarine and related spreads and shortenings).
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