more than
less than
same as
either more or less; depends on the room temperature
✅ The correct answer is option C.
Petroleum Refinery Engineering MCQs
122. Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.
50
70
90
140
✅ The correct answer is option C.
123. Platforming is a __________ process.
moving bed
fluidised bed
non-regenerative & fixed bed
regenerative
✅ The correct answer is option C.
124. Natural gasoline is produced
from oil wells
in oil refineries
by natural gas stripping
none of these
✅ The correct answer is option C.
125. Boiling range of motor gasoline is an indication of the
case of starting
rate of acceleration
vapour locking tendency
all (a), (b) and (c)
✅ The correct answer is option B.
126. CnH2n is the general formula for
olefins
naphthenes
both (a) and (b)
neither (a) nor (b)
✅ The correct answer is option C.
127. ‘Solvent naphtha’ used mostly as a solvent in paints and perfumery is produced by the __________ of virgin naphtha into small boiling range cuts.
steam reforming
distillation
desulphurisation
none of these
✅ The correct answer is option B.
128. Phenols are added in gasoline to
improve the octane number.
act as an antioxidant.
reduce its viscosity.
increase its pour point.
✅ The correct answer is option B.
129. Catalyst used in the catalytic polymerisation is
phosphoric acid on kieselghur
aluminium chloride
nickel
vanadium pentaoxide
✅ The correct answer is option A.
130. Which is the most undesirable component in kerosene ?
Aromatics
i-paraffins
n-paraffins
Naphthenes
✅ The correct answer is option A.