what are the uses of petroleum derivative ?

Answer 1

I assume you're asking what products are made from crude oil?
If so the answer is man, many products. Many are made from adding chemicals to refined (to be read distilled) products from crude oil. Some products, such as Naphtha, are made from simply refining, distilling and filtering) the crude itself. Asphalt (for roads) Bunkers/fuel (for ships) are two things that are left after the refining process. What is made from crude oil depends entirely on what products you want to end up with. Different crudes product different products. Light crudes are best for chemicals/fuels and heavy crudes are best for asphalts/#6/bunkers/heating oil etc. They heat the crude in a "tower" which is a monster beaker(like in the lab) and then they recover the different products at different points as the gasses go up the tower (depending on weight) then filter (naphtha) and combine the stuff to make the different products. hope this helps