Hydrogenation
To treat or combine chemically an unsaturated compound with hydrogen. Liquid vegetable oils are often hydrogenated to turn them into solids. To turn coal into oil by combining its carbon with hydrogen to form hydrocarbons.
Through hydrogenation .. well this is because to convert unsaturated compound into saturated compound must undergo additional process...So in this case hydrogenation process plays the role as veg oil is has double hydrogen bond ..As a result through the complete process of hydrogenation oil can be converted into vegetable ghee
Which poisonous compound can be a gas, solid or liquid, the most infamous application of which was use by the Nazi regime in Germany for mass murder in some gas chambers during the Holocaust?
In the chemical process of Vulcanization, with which element is the natural rubber heated to make it usable by improving its properties ?