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MDCAT
Chemistry
2011

Chemistry · Hydrocarbons

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

Hydrogenation of unsaturated oils is done by using:

Options
  • A

    Finely divided nickel

  • B

    Finely divided iron

  • C

    Vanadium pentaoxide

  • D

    Copper

Explanation

The hydrogenation of unsaturated oils is done under high temperature and pressure with nickel used as a catalyst.

The hydrogenation of unsaturated oils is done under high temperature and pressure with nickel used as a catalyst. 

Iron catalysts can be used in hydrogenation, but they tend to promote excessive saturation, leading to solid fats. Nickel catalysts are more commonly used for controlled hydrogenation of unsaturated oils. 

Vanadium pentoxide is not a typical catalyst for hydrogenation. It is often used in other chemical processes, such as oxidation reactions, but not for the hydrogenation of unsaturated oils. 

Copper is not commonly used as a catalyst for the hydrogenation of unsaturated oils. It may lead to side reactions or undesirable outcomes in this context. Nickel-based catalysts are preferred for this process. 

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Tagged under Chemistry · Hydrocarbons · 2011