(5) Crude oil refining is a complex chemical industry process which applies distillation technique toseparate crude into various components. (a)Describe the principles behind crude oil refining...

(5) Crude oil refining is a complex chemical industry process which applies distillation technique toseparate crude into various components.

(a)Describe the principles behind crude oil refining process. Supported by a flow scheme,outline the products from fractional distillation column and explain why they are distilled in that order.