Question

The process of converting vegetable oils into fats in the presence of nickel as catalyst is called

• A. hydrogenation.
• B. alloying.
• C. rusting.
• D. galvanization.

Answer 1

The correct option is A

hydrogenation.

The explanation for the correct option -

• The unsaturated hydrocarbons (vegetable oils) are converted into saturated hydrocarbon (fats) by the process of Hydrogenation.
• During the process of hydrogenation, hydrogen gas is added to the carbon compound in the presence of a Nickel catalyst.

The explanation for the incorrect options -

• Option B is incorrect because mixing two or more metals to enhance their properties is known as alloying. For example - to make stainless steel, iron is fused with nickel, chromium, or carbon in a process known as alloy formation.
• Option C is incorrect because when a metal is exposed to the atmosphere in the presence of moisture, it reacts with Oxygen and water vapor present in the air to form its oxide which tarnishes the metal surface. The natural process, which converts a refined metal to a more stable form, such as its oxide, hydroxide, or sulphide is known as Corrosion. The process of corrosion of Iron articles in the presence of damp air is known as rusting.
• Option D is incorrect because galvanization is a rust-prevention procedure in which a protective zinc coating is given to iron or steel products to keep them from rusting.

Hence, Option A is the correct answer.