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.

Given data

• Process: converting vegetable oil to vanaspati by catalytic hydrogenation.

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

Final AnswerHydrogen