Petroleum is ………..by fractional distillation in a tall fractionating column(tower)
a) treated
b) boil
c) melt
d) refined
Compounds having highest….condensed first near the bottom.
a) boiling point
b) melting point
c) volume
d) freezing point
In fractional distillation of crude oil, vapors condensed gradually at different levels according to their ……….
a) boiling point
b) gravity
c) temperature
d) volume
The boiling point of refinery gas is below…Co
a) 10
b) 20
c) 30
d) 40
……… is easily liquefied petroleum gas.
a) methane
b) ethane
c) propane
d) all of these
The boiling point of gasoline is from 80 to..…
a) 1300C
b) 1400C
c) 1500C
d) 1800C
