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1) Mercaptans is represented as (where R and R’ are alkyl groups) _____________________? a. R-COOH b. R-S-H c. R-S-R d. R-S-R’
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2) 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 paraffins 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
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3) Antioxidants are added in petrol to _____________________? a. Impart colour to it, for easy identification b. Minimise the gum formation c. Prevent icing of the carburettor d. Prevent the lead build up in engines
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4) Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about_________________? a. 0.1 b. 1 c. 2.5 d. 3.5
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5) Glycol added to petrol acts as a/an ________________ agent ? a. Anti-knocking b. Anti-icing c. Anti-gum forming d. Dewaxing
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6) Most commonly used crude heater before the fractionation tower in a refinery is the ______________ heater? a. Electric immersion b. Pipestill c. Steam coil d. None of these
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7) The most widely used crude topping column in refineries is the ______________ column? a. Bubble-cap b. Packed bed c. Fluidised bed d. Perforated plate
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8) 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
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9) Butadiene is a/an_________________? a. Di-olefin b. Naphthene c. Aromatic d. Olefin
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10) 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
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11) Which one is used to determine the colour of petroleum products ? a. Colour comparator b. Saybolt chromometer c. Cleveland apparatus d. None of these
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12) True boiling point apparatus is used for the__________________? a. Determination of characterisation factor b. Evaluation of oil stocks c. Determination of true vapour pressure d. None of these
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13) Sulphur content in lighter and heavier petroleum products is generally determined respectively by _______________? a. Lamp method and bomb method b. Bomb method and lamp method c. Bomb method and quartz tube method d. Quartz tube method and lamp method
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14) The octane number of aviation gasoline may be __________________? a. 79 b. 87 c. 97 d. > 100
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15) Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely miscible. It means that the aniline point of the diesel is _______________ the room temperature? a. More than b. Less than c. Same as d. Either more or less; depends on the room temperature
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16) The coking process normally mostly used in Indian oil refineries is the ____________________ coking process ? a. Delayed b. Flexi c. Fluid d. Contact
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17) The proper arrangement of the petroleum fractions in order of their boiling points is __________________ ? a. Lubricating oil > diesel > petrol > LPG b. Lubricating oil > petrol > diesel > LPG c. Petrol > lubricating oil > diesel > LPG d. Petrol > diesel > LPG > lubricating oil
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18) Diesel used in naval applications has a minimum cetane number of ___________________? a. 25 b. 35 c. 45 d. 65
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19) Flash point of atmospheric distillation residue is determined by ______________ apparatus? a. Pensky-Martens (closed cup type) b. Abel c. Cleveland (open cup type) d. None of these
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20) Crude oil is transported inland from oil field to refineries, mainly by the _____________________? a. Road tankers b. Rail tankers c. Underground pipelines d. None of these
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