1⟩ Which of the following tests is not done for transformer oil? A. Flash point and acid value. B. Aniline point. C. Dielectric strength. D. Copper strip corrosion test.
Option B
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2⟩ Diesel used in naval applications has a minimum cetane number of A. 25 B. 35 C. 45 D. 65
Option C
3⟩ Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene. A. Smoking tendency of hydrocarbons increases in the order paraffins → isoparaffins → naphthenes → aromatics. B. Smoking tendency of paraffin's increases with decrease in its molecular weight. C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond. D. Smoking tendency of aromatics decreases with increase in its molecular weight.
Option B
4⟩ Which is the most undesirable component in kerosene? A. Aromatics B. i-paraffins C. n-paraffins D. Naphthenes
Option A
5⟩ Hydrogen percentage (by weight) in crude petroleum may be about A. 5 B. 15 C. 25 D. 35
Option B
6⟩ Which of the following constituents present in petroleum is responsible for ash formation? A. Nitrogen compounds B. Organometallic compounds C. Sulphur compounds D. Oxygen compounds
Option C
7⟩ The coking process normally mostly used in Indian oil refineries is the __________ coking process. A. delayed B. flexi C. fluid D. contact
Option A
8⟩ Stabilisation of gasoline (petrol) means A. removal of dissolved gases from it. B. increasing its oxidation stability. C. improving its lead susceptibility. D. increasing its vapour pressure.
Option A
9⟩ In petroleum refining, the process used for conversion of hydrocarbons to aromatics is A. catalytic cracking B. catalytic reforming C. hydrotreating D. alkylation
Option B
10⟩ The main use of heavy gas oil produced by the vacuum distillation unit is as a A. blending component for kerosene. B. blending component for petrol. C. feedstock for fluid catalytic cracking unit. D. none of these.
Option C
11⟩ Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol. A. waxes B. mercaptans C. asphalt D. diolefins
Option B
12⟩ A good lubricant should have high A. viscosity index B. volatility C. pour point D. none of these
Option A
13⟩ Crude oil is pumped by a __________ pump. A. gear B. centrifugal C. screw D. reciprocating
Option B
14⟩ Operating condition in the electrical dehydrators for crude oil is about A. 6.5 kgf/Cm2 & 95°C. B. 1 atm. & 110 °C. C. 20 kgf/cm2 & 110°C. D. 50 atm. and 150°C.
Option A
15⟩ Solvent used in the deasphalting process is A. furfurol B. phenol C. propane D. hexane
Option C
16⟩ Visbreaking process is used mainly for making A. high cetane diesel B. high octane gasoline C. fuel oil D. smoke free kerosene
Option C
17⟩ Viscosity index of a lubricating oil A. is the measure of its flash point. B. is the measure of variation of viscosity with temperature. C. should be low. D. none of these.
Option B
18⟩ Smoke point of a test sample of kerosene is found to be 15 mm. On removal of __________ from it, the smoke point rises to 25 mm. A. n-paraffins B. olefins C. aromatics D. none of these
Option C
19⟩ __________ is not an important refinery process for upgrading the quality of lubricating oil. A. Deoiling B. Solvent refinning C. Clay treatment D. Hydrotreatment
Option A
20⟩ Pick out the undesirable property for a solvent meant for dewaxing of lube oil. A. Complete miscibility with oil. B. High solubility of wax in the solvent. C. Both (a) and (b). D. Neither (a) nor (b).
Option C
