Industrial chemistry (vanaspati): Which gas is used to manufacture vanaspati (hydrogenated vegetable oil) from vegetable oils? Identify the gaseous reactant used during catalytic hydrogenation of unsaturated oils. Choose the correct option.

Difficulty: Easy

Hydrogen
Oxygen
Nitrogen
Carbon dioxide

Correct Answer: Hydrogen

Explanation:

Given data

Process: converting vegetable oil to vanaspati by catalytic hydrogenation.

Concept/Approach
Unsaturated C=C bonds in oils are hydrogenated using hydrogen gas in presence of catalysts (e.g., Ni), producing semi-solid fat (vanaspati).

Final Answer
Hydrogen

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