31. Octane numbers of motor gasoline used in India and America are respectively
87 & 94
94 && 87
94 && 100
83 && 100
✅ The correct answer is option A.
Petroleum Refinery Engineering MCQs
32. Doctor’s solution used for sweetening of petroleum products is
sodium plumbite
sodium sulphite
sodium thiosulphate
lead sulphate
✅ The correct answer is option A.
33. Which of the following is a non-regenerative fixed bed catalytic reforming process ?
Hydroforming
Thermofer catalytic reforming
Platforming
Hyperforming
✅ The correct answer is option C.
34. Bottom product of atmospheric pressure crude oil distillation column is termed as
reduced crude
heavy ends
asphalt
residuum
✅ The correct answer is option A.
35. Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatisation by liquid SO2 extraction (Edeleanu process), its smoke point may become __________ mm.
5
10
25
100
✅ The correct answer is option C.
36. In catalytic cracking, the
gasoline obtained has a very low octane number.
pressure & temperature is very high.
gasoline obtained has very high aromatic content.
gasoline obtained has very high amount of gum forming compounds.
✅ The correct answer is option C.
37. Aniline point is the
characteristic property of diesel & lubricating oils.
measure of aromatic content of oil.
both (a) and (b).
neither (a) nor (b).
✅ The correct answer is option C.
38. Solvent used in Edeleanu process is
furfural
propane
liquid SO2
phenol
✅ The correct answer is option C.
39. Fuel oil is subjected to visbreaking to reduce its
pour point
viscosity
pressure drop on pumping
all (a), (b) and (c)
✅ The correct answer is option D.
40. Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene.
smoke point
paraffins
aromatics
naphthenes
✅ The correct answer is option C.