41⟩ Furfural solvent extraction is used for upgrading (by dissolving aromatics) A. naphtha B. lubricating oils C. wax D. cracking feedstock
Option B
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340 Petroleum Engineering Questions And Answers
42⟩ Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. A. black B. white C. red D. yellow
Option B
43⟩ Which of the following has the lowest viscosity (at a given temperature) of all? A. Naphtha B. Kerosene C. Diesel D. Lube oil
Option A
44⟩ Solution used in Doctor's treatment for the removal of mercaptans is A. sodium hydroxide B. sodium plumbite C. cupric chloride D. potassium isobutyrate
Option B
45⟩ __________ determination is not a very significant and important test for gasoline. A. Gum & sulphur content B. Viscosity C. Octane number D. Reid vapor pressure
Option B
46⟩ Catalyst used in catalytic reforming is A. platinum on alumina B. nickel C. iron D. aluminium chloride
Option A
47⟩ Octane number of gasoline is a measure of its A. resistance to knock. B. ignition delay. C. ignition temperature. D. smoke point.
Option A
48⟩ Cetane number of diesel used in trucks may be about A. 50 B. 14 C. 35 D. 85
Option A
49⟩ Paraffin base crude oil as compared to asphalt base crude gives A. higher yield of straight run gasoline. B. higher octane number gasoline. C. lower viscosity index lube oil. D. poorer yield of lube oil.
Option A
50⟩ Catalyst used in the catalytic polymerisation is A. phosphoric acid on kieselghur B. aluminium chloride C. nickel D. vanadium pentaoxide
Option A
51⟩ Which of the following is the most widely used cracking process in oil refineries ? A. Dubbs process. B. T.C.C. moving bed process. C. Fluidised bed catalytic cracking process. D. Houdry's fixed bed process.
Option C
52⟩ Petroleum liquid fuels having flash point greater than 66°C is considered as safe during storage and handling. Which of the following has flash point > 66°C? A. Naphtha B. Petrol C. Kerosene D. Heavy fuel oil
Option D
53⟩ Presence of aromatics in A. diesel increases its cetane number. B. kerosene increases its smoke point. C. petrol increases its octane number. D. all (a), (b) and (c).
Option C
54⟩ The solvent used in Barisol dewaxing process is A. hexane B. furfural C. benzol and ethylene dichloride D. methyl ethyl ketone (MEK)
Option C
55⟩ Choose the correct statement regarding thermal cracking. A. Moderate changes in operating temperature does not change the depth of cracking. B. Increased residence time results in the decreased severity of cracking. C. At low pressure, the yield of lighter hydrocarbons are more. D. Greater depth of cracking gives lower octane number gasoline.
Option D
56⟩ A typical yield of diesel in straight run distillation of crude oil may be about __________ percent. A. 8 B. 18 C. 28 D. 35
Option A
57⟩ Diesel index.(an alternative index for expressing the quality of diesel) is A. determined by using a test engine. B. not related to aniline point. C. equal to cetane number plus 3. D. all (a), (b) & (c).
Option C. equal to cetane number plus 3.
58⟩ Which is almost absent in crude petroleum? A. Olefins B. Mercaptans C. Naphthenes D. Cycloparaffins
Option B
59⟩ Tetra-ethyl lead is added in gasoline to A. increase its smoke point. B. reduce gum formation. C. reduce the pour point. D. increase its octane number.
Option D
60⟩ Which of the following is an additive used for improving the cetane number of diesel? A. Tetraethyl lead B. Tetramethyllead C. Ethyl nitrate or acetone D. None of these
Option A
