Question

. ................ is the key operation in any oil refinery. 
(A)Crystallisation
(B)Evaporisation
(C)Distillation
D - All of these​

Answer 1

Answer:

C) Distillation

Explanation:

Different boiling points allow the hydrocarbons to be separated by distillation. Since the lighter liquid products are in great demand for use in internal combustion engines, a modern refinery will convert heavy hydrocarbons and lighter gaseous elements into these higher-value products.