In………a mixture of different liquids are evaporated then condensed.
a) fractional distillation
b) evaporation
c) sublimation
d) drilling
In fractional distillation, different liquids are evaporated according to their ……….
a) melting point
b) boiling point
c) freezing point
d) all of these
Important Fractions of Petroleum:-
When ………is pumped out from the grounds it is mixture of a large number of compounds.
a) paints
b) wood
c) water
d) crude oil
The
conversion of crude oil into useful products with different boiling range &
free from impurities is called………….
a) distillation
b) refining
c) both a & b
d) none of these
The complex mixture of hydrocarbons in crude oil can be separated into fractions by the technique of …………..
a) sublimation
b) fractional distillation
c) smelling
d) all of these
