Q. The multiple components of crude oil are separated by a process called fractionation (fractional distillation) at petroleum refineries.

Rank (or arrange) the  following petroleum products according to their increasing risk of  fire and explosion at room temperature, and provide the technical basis  for the ranking: asphalt, aviation gasoline, transmission fluids,  propane, and kerosene.
Why do most experts recommend  the use of aqueous film-forming foam (AFFF) to extinguish crude oil fires  inside a bulk storage tank?

Your response must be at least 200 words in length.