heavy fuel oil
residuum
straight run gasoline
casing head gasoline
✅ The correct answer is option C.
Petroleum Refinery Engineering MCQs
52. Octane number of n-heptane is assumed to be
100
0
70
∞
✅ The correct answer is option B.
53. Molecular weight of petrol may be about
40-60
100-130
250-300
350-400
✅ The correct answer is option B.
54. Which of the following has the lowest viscosity (at a given temperature) of all?
Naphtha
Kerosene
Diesel
Lube oil
✅ The correct answer is option A.
55. Most commonly used crude heater before the fractionation tower in a refinery is the __________ heater.
electric immersion
pipestill
steam coil
none of these
✅ The correct answer is option B.
56. Quinoline is a/an __________ compound.
sulphur
nitrogen
oxygen
none of these
✅ The correct answer is option B.
57. Antioxidants are added in petrol to
impart colour to it, for easy identification.
minimise the gum formation.
prevent icing of the carburettor.
prevent the lead build up in engines.
✅ The correct answer is option B.
58. Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?
PCM
Tar
Light diesel oil
Low viscosity furnace oil
✅ The correct answer is option C.
59. In catalytic alkylation, higher iso-butane to olefin ratio gives
low final boiling point product
higher yield
both (a) and (b)
neither (a) nor (b)
✅ The correct answer is option A.
60. Petrolatum is
same as petroleum ether.
petroleum coke.
a mixture of microcrystalline wax in viscous hydrocarbon liquids.
none of these.
✅ The correct answer is option C.