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1) Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses _______________ as catalyst? a. Bauxite b. Fuller’s earth c. Activated clay d. All A., B. & C.
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2) Which of the following processes in oil refinery does not employ „cracking‟? a. Coking b. Visbreaking c. Pyrolysis d. None of these
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3) In catalytic cracking process, olefins crack ______________ times faster than in thermal cracking process? a. 100 b. 200-300 c. 1000-10000 d. 10
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4) ______________ test is done to find out the softening point of bitumen? a. Impact b. Ball and ring c. Flame d. Viscosity
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5) Straight run petrol as compared to methyl/ethyl alcohol has_________________? a. Lower calorific value b. Lower octane number c. Higher specific gravity d. Higher ignition temperature
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6) Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is_________________? a. Propane b. Diethylene glycol c. Aqueous solution (10% water) of diethylene glycol d. Methyl ethyl ketone (MEK)
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7) Solution used in Doctor’s treatment for the removal of mercaptans is_________________? a. Sodium hydroxide b. Sodium plumbite c. Cupric chloride d. Potassium isobutyrate
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8) The characterisation factor of a crude oil is calculated as 12.5. It means that; it is________________? a. Paraffinic b. Naphthenic c. Intermediate d. None of these
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9) Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of ______________ kcal/kg? a. 600-750 b. 250-350 c. 1000-1500 d. 2000-2500
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10) Pour point and freezing point is equal for__________________? a. Petrol b. Diesel c. Water d. Crude petroleum
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11)
Aniline point test of an oil qualitatively indicates the ______________ content of an oil? a. Paraffin b. Olefin c. Aromatic d. Naphthene
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12) Mercaptans are________________? a. Low boiling sulphur compounds b. Added in LPG cylinders to detect gas leakage by its smell c. Undesirable in petrol, as they reduce its octane number d. All A., B. and C.
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13) Crude oil is subjected to vacuum distillation in the last stage, because_________________? a. High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose b. Lighter/low boiling products are prone to thermal decomposition c. High purity products can be obtained thereby d. None of these
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14) Main constituent of natural gas is___________________? a. CH4 b. C2H2 c. C2H4 d. C2H6
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15) For gasoline, the flash point (<50°C) is determined by the______________________? a. Abel apparatus b. Pensky-Marten’s apparatus c. Saybolt chromometer d. None of these
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16) Catalyst used in the catalytic cracking is_____________________? a. Silica-alumina b. Silica gel c. Vanadium pentoxide d. Nickel
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17) 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.
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18) Smoke volatility index is equal to smoke point plus______________________? a. 0.42 × (% distilled at 204°C) b. 5 mm c. 0.84 × (% distilled at 204°C) d. 10 mm approximately
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19) Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API) ? a. Diesel b. Gasoline c. Atmospheric gas oil d. Vacuum gas oil
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20) Higher viscosity of lubricating oil usually signifies_______________________? a. Lower Reid vapour pressure b. Higher acid number c. Higher flash point and fire point d. Lower flash point and fire point
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