The process of turns crude oil into the type of gases that can be used for cooking, in cars, and for other human purposes. hints the process of turns crude oil into the type of gases that can be used for cooking, in cars, and for other human purposes. refining redefining primary drilling secondary drilling

The process of refining turns crude oil into the type of gases that can be used for cooking, in cars, and for other human purposes. Refining is a chemical engineering process. The useful products obtained from rude oil are: liquefied petroleum gas (LPG), gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils. 

Biochemistry, it deals with the chemical constitution, the breakdown and the synthesis of plant and animal products.