Which of the following is NOT a primary fraction obtained from crude oil?

The correct answer is coal, as it is not a primary fraction obtained from crude oil. Crude oil is primarily fractionated through a process known as distillation, which separates the different components based on their boiling points. The primary fractions obtained from this process include gasoline, diesel, and kerosene, which are all derived from the refining of crude oil.

Gasoline is a light fraction used primarily as fuel for internal combustion engines. Diesel is somewhat heavier and is used for diesel engines, while kerosene, which falls between gasoline and diesel in terms of boiling point, is used in jet fuel and heating oil. Coal, on the other hand, is a completely different fossil fuel that is primarily formed from plant material and is not derived from the distillation of crude oil. Thus, coal does not belong to the list of primary fractions obtained in the refining of crude oil.