As a subject matter expert in the field of petrochemicals, I can provide a comprehensive answer to your question regarding the relationship between gas and oil.
Gas, in the context of fuel, primarily refers to natural gas, which is a mixture of hydrocarbons primarily consisting of methane, and is found in underground reservoirs. It is not directly derived from crude oil but is often found in association with it. However, there is another type of gas used in vehicles, which is known as liquefied petroleum gas (LPG). LPG is a byproduct of both petroleum refining and natural gas processing, and it includes propane and butane.
The process of refining crude oil involves the distillation of various hydrocarbons based on their boiling points, which results in a range of products, including gasoline, diesel, jet fuel, and other products. During this process, some gases are also produced, which can be further processed to yield LPG. LPG is a versatile fuel that can be used in vehicles, heating, and cooking, among other applications.
Gasoline, as you mentioned, is a volatile, flammable liquid obtained from the refining of petroleum, or crude oil. It was indeed originally discarded as a byproduct of kerosene production, but its ability to vaporize at low temperatures made it a useful fuel for many machines. Gasoline is a key component of the transportation sector, powering internal combustion engines in cars, trucks, and other vehicles.
In summary, while natural gas is not derived from crude oil, LPG, which is used as a fuel in certain applications, is a byproduct of both petroleum refining and natural gas processing. Gasoline, on the other hand, is a direct product of crude oil refining and is not the same as the gas used in the context of natural gas or LPG.
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