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Which gas is used to manufacture vanaspati from vegetable oil is

  • A.Oxygen
  • B.Hydrogen
  • C.Nitrogen
  • D.Carbon dioxide

Answer: B

Hydrogen is used to make vanaspati.

Passed through the warm oil over a nickel catalyst, it adds across the carbon–carbon double bonds, converting the unsaturated liquid oil into a saturated semi-solid fat. The process is called hydrogenation, or hardening of oils.

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