Petroleum Engineering Interview Questions And Answers Guide. · Petroleum Engineering Interview Questions And Answers Global Guideline . COM In petroleum refining, the process used

Petroleum Engineering InterviewQuestions And Answers Guide.

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Petroleum Engineering Interview Questions And Answers

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Petroleum Engineering Job Interview Preparation Guide.

Question # 1Diesel used in naval applications has a minimum cetane number ofA. 25B. 35C. 45D. 65

Answer:-Option CRead More Answers.

Question # 2Which 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.

Answer:-Option BRead More Answers.

Question # 3Which is the most undesirable component in kerosene?A. AromaticsB. i-paraffinsC. n-paraffinsD. Naphthenes

Answer:-Option ARead More Answers.

Question # 4Pick 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.


Question # 5Solvent used in duo-sol extraction for lube oil upgradation is a mixture ofA. propane & phenol-cresol mixture.B. methyl ethyl ketone & glycol.C. phenol & furfural.D. propane & liquid sulphur dioxide.


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Question # 6Which of the following fractions of a crude oil will have the maximum gravity API (i.e. .API)?A. DieselB. GasolineC. Atmospheric gas oilD. Vacuum gas oil


Question # 7For gasoline, the flash point (<50.C) is determined by theA. Abel apparatus.B. Pensky-Marten's apparatus.C. Saybolt chromometer.D. none of these.

Answer:-Option DRead More Answers.

Question # 8Flash point of atmospheric distillation residue is determined by __________ apparates.A. Pensky-Martens (closed cup type).B. Abel.C. Cleveland (open cup type)D. none of these.


Question # 9Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is aboutA. 0.1B. 1C. 2.5D. 3.5


Question # 10Pour point and freezing point is equal forA. petrolB. dieselC. waterD. crude petroleum


Question # 11Casing head gasoline is the liquidA. butane.B. propane.C. natural gas.D. gasoline separated from wet natural gas by compression.


Question # 12Most commonly used crude heater before the fractionation tower in a refinery is the __________ heater.A. electric immersionB. pipestillC. steam coilD. none of these

Answer:-




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Option BRead More Answers.

Question # 13Which of the following is used as a catalyst in fluidised bed catalytic cracking?A. Silica-magnesiaB. Silica-aluminaC. Bentonite claysD. All (a), (b) and (c)


Question # 14Pick 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).


Question # 15Smoke 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-paraffinsB. olefinsC. aromaticsD. none of these


Question # 16__________ is not an important refinery process for upgrading the quality of lubricating oil.A. DeoilingB. Solvent refinningC. Clay treatmentD. Hydrotreatment


Question # 17Viscosity index of a lubricating oilA. 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.


Question # 18Visbreaking process is used mainly for makingA. high cetane dieselB. high octane gasolineC. fuel oilD. smoke free kerosene


Question # 19Operating condition in the electrical dehydrators for crude oil is aboutA. 6.5 kgf/Cm2 & 95.C.B. 1 atm. & 110 .C.




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C. 20 kgf/cm2 & 110.C.D. 50 atm. and 150.C.


Question # 20Crude oil is pumped by a __________ pump.A. gearB. centrifugalC. screwD. reciprocating


Question # 21Solvent used in the deasphalting process isA. furfurolB. phenolC. propaneD. hexane


Question # 22A good lubricant should have highA. viscosity indexB. volatilityC. pour pointD. none of these


Question # 23Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol.A. waxesB. mercaptansC. asphaltD. diolefins


Question # 24The main use of heavy gas oil produced by the vacuum distillation unit is as aA. blending component for kerosene.B. blending component for petrol.C. feedstock for fluid catalytic cracking unit.D. none of these.


Question # 25Stabilisation of gasoline (petrol) meansA. removal of dissolved gases from it.B. increasing its oxidation stability.C. improving its lead susceptibility.D. increasing its vapour pressure.


Question # 26




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In petroleum refining, the process used for conversion of hydrocarbons to aromatics isA. catalytic crackingB. catalytic reformingC. hydrotreatingD. alkylation


Question # 27Diesel index.(an alternative index for expressing the quality of diesel) isA. determined by using a test engine.B. not related to aniline point.C. equal to cetane number plus 3.D. all (a), (b) & (c).

Answer:-Option C. equal to cetane number plus 3.Read More Answers.

Question # 28Octane number of gasoline is a measure of itsA. resistance to knock.B. ignition delay.C. ignition temperature.D. smoke point.


Question # 29Pick out the additive property of a lube oil out of following.A. .API gravityB. Specific gravityC. ViscosityD. Flashpoint


Question # 30Catalyst used in catalytic reforming isA. platinum on aluminaB. nickelC. ironD. aluminium chloride


Question # 31Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint.A. blackB. whiteC. redD. yellow


Question # 32Cetane number of diesel used in trucks may be aboutA. 50B. 14C. 35D. 85

Answer:-Option A




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Question # 33__________ test is done to find out the softening point of bitumen.A. ImpactB. Ball and ringC. FlameD. Viscosity


Question # 34__________ determination is not a very significant and important test for gasoline.A. Gum & sulphur contentB. ViscosityC. Octane numberD. Reid vapor pressure


Question # 35Which of the following has the lowest viscosity (at a given temperature) of all?A. NaphthaB. KeroseneC. DieselD. Lube oil


Question # 36Mercaptans areA. 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)


Question # 37Paraffin base crude oil as compared to asphalt base crude givesA. higher yield of straight run gasoline.B. higher octane number gasoline.C. lower viscosity index lube oil.D. poorer yield of lube oil.


Question # 38True boiling point apparatus is used for theA. determination of characterisation factor.B. evaluation of oil stocks.C. determination of true vapour pressure.D. none of these.


Question # 39In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones.A. sulphur increasesB. sulphur decreasesC. nitrogen decreases




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D. none of these


Question # 40Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst.A. bauxiteB. fuller's earthC. activated clayD. all (a), (b) & (c)


Question # 41Solution used in Doctor's treatment for the removal of mercaptans isA. sodium hydroxideB. sodium plumbiteC. cupric chlorideD. potassium isobutyrate


Question # 42Flash point of motor gasoline may be around __________ .C.A. 10B. 45C. 100D. 150


Question # 43__________ converts n-paraffins to i-paraffins.A. AlkylationB. PolymerisationC. IsomerisationD. none of these


Question # 44The colour of gasoline is an indication of itsA. octane number.B. lead susceptibility.C. gum forming tendency & thoroughness of refining.D. none of these.


Question # 45The octane number of aviation gasoline may beA. 79B. 87C. 97D. >100


Question # 46




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Flash point of an oil gives an idea of theA. nature of boiling point diagram of the system.B. amount of low boiling fraction present.C. explosion hazards.D. all (a), (b) and (c)


Question # 47Furfural solvent extraction is used for upgrading (by dissolving aromatics)A. naphthaB. lubricating oilsC. waxD. cracking feedstock


Question # 48Illuminating characteristics of kerosene is expressed by itsA. smoke pointB. aniline pointC. luminosity numberD. aromatic content


Question # 49Which of the following constituents present in petroleum is responsible for ash formation?A. Nitrogen compoundsB. Organometallic compoundsC. Sulphur compoundsD. Oxygen compounds


Question # 50The coking process normally mostly used in Indian oil refineries is the __________ coking process.A. delayedB. flexiC. fluidD. contact


Question # 51Hydrogen percentage (by weight) in crude petroleum may be aboutA. 5B. 15C. 25D. 35


Question # 52Which of the following is an additive used for improving the cetane number of diesel?A. Tetraethyl leadB. TetramethylleadC. Ethyl nitrate or acetoneD. None of these

Answer:-Option A




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Question # 53Tetra-ethyl lead is added in gasoline toA. increase its smoke point.B. reduce gum formation.C. reduce the pour point.D. increase its octane number.


Question # 54Aromatics are desired constituents ofA. lubricating oilB. dieselC. keroseneD. petrol


Question # 55Crude topping column operates at __________ pressure.A. atmosphericB. 10 atmC. vacuumD. 3 atm.


Question # 56Octane number (unleaded) of gasoline produced by isomerisation of butane may be aboutA. 45B. 55C. 70D. 90


Question # 57In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of productsincluding gas oil, diesel oil and heavy fuel oil belongs to the fractionA. heavy distillatesB. intermediate distillatesC. light endsD. residues


Question # 58Feedstock for polymerisation isA. naphtha.B. cracked gases rich in C2 & C4 olefins.C. low boiling aromatics.D. none of these.


Question # 59Pick out the correct statement pertaining to catalytic cracking.A. With increase in the reactor pressure, octane number of gasoline decreases.B. With increase in the reactor temperature, gasoline yield decreases for a given conversion.




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C. Percentage conversion increases with increase in the catalyst to oil ratio.D. all (a), (b) and (c)


Question # 60Which of the following is a naphthene?A. ButeneB. ButadieneC. CyclohexaneD. Acetylene


Question # 61With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum productsA. decreasesB. increasesC. remains sameD. unpredictable from the data


Question # 62Smoke point of a good burning kerosene may be around __________ mm.A. 0-5B. 20-25C. 60-75D. 100-120


Question # 63Increase in the specific gravity of petroleum products indicatesA. decrease in paraffin content.B. increase in thermal energy per unit weight.C. increase in aromatic content.D. higher H/C ratio.


Question # 64Which of the following processes is used for the production of petroleum coke?A. StabilisationB. VisbreakingC. CrackingD. Reforming


Question # 65Quinoline is a/an __________ compound.A. sulphurB. nitrogenC. oxygenD. none of these


Question # 66




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Flash point of diesel/kerosene (>50.C) is determined by theA. Abel apparatusB. Pensky-Martens apparatusC. Saybolt chromometerD. none of these


Question # 67VisbreakingA. uses natural gas as feedB. is carried out at atmospheric pressureC. produces fuel oil of lower viscosityD. produces gasoline only


Question # 68Cetane number of alpha methyl naphthalene is assumed to beA. 0B. 100C. 50D. âˆž


Question # 69Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene withA. methyl alcoholB. ethyl alcoholC. methaneD. ethane


Question # 70LPG when brought to atmospheric pressure & temperature will be aA. liquid lighter than water.B. liquid heavier than water.C. gas lighter than air.D. gas heavier than air.


Question # 71The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is toA. obviate catalyst poisoning.B. maintain the reaction temperature.C. sustain the reactor pressure.D. hydrogenate the feed stock.


Question # 72The order of preference for feedstock to a catalytic reformer isA. catalytic naphtha - coking naphtha - virgin naphtha.B. coking naphtha - virgin naphtha - catalytic naphtha.C. virgin naphtha - catalytic naphtha - coking naphtha.D. virgin naphtha - coking naphtha - catalytic naphtha.

Answer:-Option B




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Question # 73True vapour pressure of a petroleum fraction __________ Reid vapour pressure.A. is less thanB. is more thanC. is same asD. may be either more or less than


Question # 74Hydrocracking employsA. high pressure & temperature.B. low pressure & temperature.C. high pressure and low temperature.D. high temperature and low pressure.


Question # 75Sour crude means the __________ bearing crude.A. asphaltB. sulphur compoundsC. waxD. nitrogen compounds


Question # 76The main aim of cracking is to produceA. gasolineB. lube oilC. petrolatumD. coke


Question # 77The general formula of naphthenes isA. CnH2n + 2B. CnH2n-6 (where, n >= 6)C. CnHn-4D. same as that for olefins i.e. CnH2n


Question # 78'Solvent naphtha' used mostly as a solvent in paints and perfumery is produced by the __________ of virgin naphtha into small boiling range cuts.A. steam reformingB. distillationC. desulphurisationD. none of these


Question # 79Which of the following has the highest flash point of all?A. DieselB. KeroseneC. Petrol




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D. Furnace oil


Question # 80The characterisation factor of crude petroleum oil is aroundA. 3B. 11C. 22D. 28


Question # 81The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol.A. 3B. 300C. 3000D. 1000


Question # 82Which 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.


Question # 83Catalyst used in the catalytic polymerisation isA. phosphoric acid on kieselghurB. aluminium chlorideC. nickelD. vanadium pentaoxide


Question # 84Petroleum 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. NaphthaB. PetrolC. KeroseneD. Heavy fuel oil


Question # 85The solvent used in Barisol dewaxing process isA. hexaneB. furfuralC. benzol and ethylene dichlorideD. methyl ethyl ketone (MEK)


Question # 86




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Presence of aromatics inA. diesel increases its cetane number.B. kerosene increases its smoke point.C. petrol increases its octane number.D. all (a), (b) and (c).


Question # 87Choose 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.


Question # 88A typical yield of diesel in straight run distillation of crude oil may be about __________ percent.A. 8B. 18C. 28D. 35


Question # 89Which is almost absent in crude petroleum?A. OlefinsB. MercaptansC. NaphthenesD. Cycloparaffins


Question # 90Naphthenic acid is a/an __________ compound.A. sulphurB. nitrogenC. oxygenD. none of these


Question # 91Glycol added to petrol acts as a/an __________ agent.A. anti-knockingB. anti-icingC. anti-gum formingD. dewaxing


Question # 92Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oilA. gives higher yield of petrol.B. lower octane number of petrol.C. higher sulphur content in the product.D. higher gum forming material in petrol.

Answer:-Option A




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Question # 93Which one is used to determine the colour of petroleum products?A. Colour comparatorB. Saybolt chromometerC. Cleveland apparatusD. None of these


Question # 94Pick out the wrong statement.A. Iso-paraffin crack faster than n-paraf-fin.B. Catalytic cracking is endothermic, but the regeneration of catalyst is exothermic.C. Rate of decomposition of olefins in catalytic cracking is slightly slower than the thermal cracking.D. None of these.


Question # 95Feedstock for the production of biodiesel isA. herbal plantsB. used vegetable oilsC. LSHSD. bagasse


Question # 96The proper arrangement of the petroleum fractions in order of their boiling points isA. lubricating oil > diesel > petrol > LPGB. lubricating oil > petrol > diesel > LPGC. petrol > lubricating oil > diesel > LPGD. petrol > diesel > LPG > lubricating oil


Question # 97Octane number of gasoline produced by two stage fluidised catalytic cracking process isA. 80B. 87C. 92D. 97


Question # 98Pick out the wrong statement.A. Higher specific gravity of petroleum products means higher C/H ratio.B. Aromatics have lower specific gravity than corresponding paraffins.C. Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume.D. Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight.


Question # 99Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during crackingmainly toA. increase the yield of light distillates.B. suppress coke formation.




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C. enhance the octane number of gasoline.D. reduce gum content in gasoline.


Question # 100Pick out the wrong statement.A. Higher temperature is employed in visbreaking than in thermal cracking.B. Pyrolysis is a mild thermal cracking process.C. Lead suceptibility of petrol produced by catalytic process is more than that produced by thermal cracking.D. Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process.


Question # 101Testing of the knocking characteristics of petrofuels is done in a __________ engine.A. CarnotB. CFR (Co-operative fuel research)C. StirlingD. diesel


Question # 102Name the hydrocarbon having the poorest oxidation stability.A. naphtheneB. olefinC. paraffinD. aromatics


Question # 103The first crude oil refinery of India is located atA. NaharkatiyaB. DigboiC. KochinD. Madras


Question # 104Olefins areA. saturated hydrocarbons.B. unsaturated cyclic compounds (hydrocarbons).C. present in substantially good quantity in crude petroleum.D. none of these.


Question # 105Which of the following is desirable in diesel and kerosene but is undersirable in gasoline?A. AromaticsB. MercaptansC. ParaffinsD. Naphthenic acid


Question # 106




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Phenols are added in gasoline toA. improve the octane number.B. act as an antioxidant.C. reduce its viscosity.D. increase its pour point.


Question # 107The pressure (kg/cm2 ) and temperature (.C) maintained in electrical desalters for crude oil are respectivelyA. 10 and 120B. 1 and 200C. 50 and 250D. 10 and 300


Question # 108The average boiling point of aviation turbine fuel is closest to that ofA. lubricating oilsB. LPGC. dieselD. Kerosene


Question # 109Crude oil is transported inland from oil field to refineries, mainly by theA. road tankersB. rail tankersC. underground pipelinesD. none of these


Question # 110Solvent used for dewaxing of petroleum products areA. furfuralB. methyl ethyl ketone (MEK)C. propaneD. both(b)&(c)


Question # 111The most widely used crude topping column in refineries is the __________ column.A. bubble-capB. packed bedC. fluidised bedD. perforated plate


Question # 112Deoiling of wax is done by itsA. heatingB. coolingC. solvent extractionD. both(b)&(c)

Answer:-Option D




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Question # 113Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ .C.A. 50B. 70C. 90D. 140


Question # 114Molecular weight of crude petroleum may be aroundA. 50B. 250C. 1500D. 5000


Question # 115Mercaptans is represented as (where R and R' are alkyl groups)A. R-COOHB. R-S-HC. R-S-RD. R-S-R'


Question # 116Petrolatum isA. same as petroleum ether.B. petroleum coke.C. a mixture of microcrystalline wax in viscous hydrocarbon liquids.D. none of these.


Question # 117Electrical desalting of crude oil removes the __________ impurities.A. oleophilicB. oleophobicC. both (a) and (b)D. neither (a) nor (b)


Question # 118An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.A. 5B. 15C. 40D. 60


Question # 119Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly useddeoiling solvents. Use of former as the deoiling solvent has the advantages of theA. elimination of solvent drying facility.B. higher nitration temperature.




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C. lower solvent dilution ratio.D. all (a), (b) & (c).


Question # 120Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about __________ kms.A. 0.1 to 0.5B. 1.5 to 4.5C. 7.5 to 12.5D. 15-20


Question # 121Sulphur content in lighter and heavier petroleum products is generally determined respectively byA. 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.


Question # 122Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of thediesel is __________ the room temperature.A. more thanB. less thanC. same asD. either more or less; depends on the room temperature


Question # 123Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if itsA. molecular weightB. aromatics contentC. both a & bD. neither a nor b


Question # 124Catalyst used in catalytic polymerisation which produces polymer gasoline isA. H2SO4B. H3PO4C. both (a) and (b)D. AlCl3


Question # 125Butadiene is a/anA. di-olefinB. naphtheneC. aromaticD. olefin





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Question # 126Flash point of an oil is determined by theA. Pensky Martens apparatus.B. Ramsbottom apparatus.C. Saybolt viscometer.D. Conradson apparatus.


Question # 127Gum formation in stored gasoline is mainly due to theA. alkylation of unsaturates.B. presence of sulphur.C. oxidation & polymerisation of unsaturates.D. higher aromatic content.


Question # 128Which of the following categories of gasoline has the highest lead susceptibility?A. Straight run gasolineB. Platinum reformed gasolineC. Catalytical cracked gasolineD. Polymer gasoline


Question # 129Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.A. polymerB. unleadedC. casing headD. straight run


Question # 130Antioxidants are added in petrol toA. 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.


Question # 131Good quality kerosene should haveA. low smoke point.B. high smoke point.C. high aromatics content.D. low paraffins content.


Question # 132Which of the following reactions is undesirable in the production of catalytically reformed gasoline?A. Dehydrogenation of naphtheneB. Dehydrogenation of lower paraffinsC. Dehydrocyclisation of higher paraffinsD. Isomerisation of paraffins

Answer:-




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Option BRead More Answers.

Question # 133During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ withincrease in the amount of water.A. decreasesB. increasesC. remains unchangedD. decreases linearly


Question # 134Straight run naphtha is converted into high octane number petrol (gasoline) by catalyticA. crackingB. polymerisationC. reformingD. isomerisation


Question # 135Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done toA. increase its smoke point.B. improve its oxidation stability.C. decrease the breathing loss.D. none of these.


Question # 136The most suitable solvent for deasphalting vacuum residue isA. propaneB. methyl ethyl ketoneC. doctor's solutionD. methanol amine


Question # 137Paraffins are desirable in lubricating oil, as it has got highA. viscosityB. viscosity indexC. smoke pointD. pour point


Question # 138Cetane number of a diesel fuel is the measure of itsA. ignition delayB. smoke pointC. viscosityD. oxidation stability


Question # 139Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is __________ centistokes (or 100 Redwood I seconds).A. 5




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B. 25C. 50D. 100


Question # 140Thermofer catalytic cracking process is a __________ process.A. fixed bedB. moving bedC. fluidised bedD. non-catalytic


Question # 1411 centistoke is equal to __________ Redwood I seconds.A. 1B. 4.08C. 0.408D. 40.8


Question # 142Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominanceofA. thermal crackingB. gum formationC. cokingD. discoloration


Question # 143Which is the most ideal feed stock for 'coking' process used for the manufacture of petroleum coke?A. NaphthaB. Vacuum residueC. Light gas oilD. Diesel


Question # 144Which of the following gasolines (unleaded) has the least octane number?A. Catalytically cracked gasolineB. Straight run gasolineC. Catalytically reformed gasolineD. Polymer gasoline


Question # 145Feed for reforming is generallyA. naphtha or straight run gasoline.B. reduced crude.C. vacuum gas oil.D. atmospheric gas oil.





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Question # 146Which of the following is the most important property for a jet fuel?A. Cloud pointB. Pour pointC. ColourD. Freezing point


Question # 147Which parameter is used for the grading of paraffin waxes?A. Specific gravityB. Melting pointC. ViscosityD. Penetration number


Question # 148Which of the following has the minimum .API gravity of all?A. DieselB. KeroseneC. PetrolD. Furnace oil


Question # 149Higher pressure in the reforming reactorA. increases coke formation.B. increases the rate of reaction.C. produces high octane number gasoline.D. none of these.


Question # 150Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.A. 85B. 65C. 50D. 98


Question # 151The main reaction in reforming is theA. dehydrogenation of naphthenes.B. hydrogenation of naphthenes.C. hydrocracking of paraffins.D. saturation of olefins.


Question # 152Carbon percentage (by weight) in crude petroleum may be aboutA. 65B. 75C. 85D. 95

Answer:-




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Option CRead More Answers.

Question # 153Lane and Garton classification of petroleum is based on itsA. compositionB. specific gravityC. optical propertiesD. viscosity


Question # 154With increase in the molecular weight of aromatic present in kerosene, its smoking tendencyA. increasesB. decreasesC. remains sameD. is unpredictable


Question # 155Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).A. 0.03B. 3C. 35D. 70


Question # 156Clay treatment is used to removeA. salt from the crude oil.B. colour & dissolved gases from cracked gasoline.C. wax from lube oil.D. none of these.


Question # 157Water separometer index (modified) (WSIM) of a petrofuel is the measure of itsA. emulsification tendency.B. water separation characteristics.C. water content.D. water absorbing capacity from atmosphere.


Question # 158Tetraethyl lead is added to the petrol to increase its octane number, because its octane number isA. more than 100B. round about 100C. between 50 and 100D. less than 25


Question # 159Pressure & temperature maintained in catalytic cracking is aboutA. 2atm & 500.CB. 10atm & 500.C




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C. 30atm & 200.CD. 50atm. & 750.C


Question # 160Pick out the wrong statement.A. Pensky-Marten apparatus is used for determining flash points above 50.C.B. Characterisation factor of paraffinic crude oil is more than 12.C. Abel apparatus is used for determining flash points below 50.C.D. An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index.


Question # 161Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Charvalue of a good quality kerosene should be less than __________ mg/kg of kerosene.A. 1B. 20C. 100D. 500


Question # 162Highest quality bitumen is produced from the __________ crude oil.A. paraffinicB. naphthenicC. intermediateD. mixed


Question # 163Octane number (unleaded) of reformed gasoline may be uptoA. 60B. 70C. 80D. 90


Question # 164Aniline point is a property of theA. dieselB. LPGC. naphthaD. gasoline


Question # 165Waxes present in petroleum productsA. can be separated out by distillation.B. are not soluble in them.C. crystallise out at low temperature.D. decrease their viscosity.





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Question # 166Which of the following has the lowest cetane number?A. AromaticsB. i-paraffinsC. NaphtheneD. OlefinsE. n-paraffins


Question # 167Ethyl mercaptan is a/an __________ compound.A. sulphurB. nitrogenC. oxygenD. none of these


Question # 168Which of the following is a non-regenerative fixed bed catalytic reforming process?A. HydroformingB. Thermofer catalytic reformingC. PlatformingD. Hyperforming


Question # 169Aniline point of high speed diesel may be about __________ .C.A. 35B. 70C. 105D. 150


Question # 170Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?A. PCMB. TarC. Light diesel oilD. Low viscosity furnace oil


Question # 171A typical yield of kerosene in straight run distillation of crude oil may be about __________ percent.A. 4B. 10C. 18D. 26


Question # 172The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.A. 1.2B. 12C. 120D. 700

Answer:-




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Option CRead More Answers.

Question # 173Which of the following is not a sulphur compound present in petroleum?A. ThiophenesB. MercaptansC. SulphonesD. Pyroles


Question # 174Products drawn from the top to bottom of the crude oil distillation column has progressively increasingA. boiling pointsB. molecular weightC. C/H ratioD. all (a), (b) and (c)


Question # 175Asphalts areA. low molecular weight & low boiling point compounds present in petroleum.B. desirable in catalytic cracking feedstock, because they produce coke.C. readily oxidisable and form carbonaceous sludge.D. all (a), (b) & (c).


Question # 176Smoke point of kerosene is theA. time after which smoking starts on burning.B. temperature at which smoking starts.C. maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp.D. none of these.


Question # 177The conductivity of crude oil-water mixture depends on theA. pH valueB. water percentageC. temperatureD. all (a), (b) and (c)


Question # 178Which of the following is not an important property of fuel oil/furnace oil?A. Sulphur contentB. ViscosityC. Aniline pointD. Flash point


Question # 179Which of the followingis desirable in petrol (gasoline) but undesirable in kerosene?A. ParaffinsB. Aromatics




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C. MercaptansD. Naphthenic acid


Question # 180Extractor temperature is maintained at -20.C in Edeleanu process to reduce the __________ of kerosene.A. smoke pointB. paraffinsC. aromaticsD. naphthenes


Question # 181Cracking isA. an exothermic reaction.B. an endothermic reaction.C. favoured at very low temperature.D. none of these.


Question # 182The most important property for a jet fuel is itsA. viscosityB. freezing pointC. calorific valueD. flash point


Question # 183Which of the following has the highest gum forming tendency in gosoline?A. ParaffinsB. DiolefinsC. AromaticsD. Naphthenes


Question # 184Higher viscosity of lubricating oil usually signifiesA. lower Reid vapour pressure.B. higher acid number.C. higher flash point and fire point.D. lower flash point and fire point.


Question # 185Aniline point test of an oil qualitatively indicates the __________ content of an oil.A. paraffinB. olefinC. aromaticD. naphthene


Question # 186




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Which of the following processes in oil refinery does not employ 'cracking'?A. CokingB. VisbreakingC. PyrolysisD. None of these


Question # 187Bottom product of atmospheric pressure crude oil distillation column is termed asA. reduced crudeB. heavy endsC. asphaltD. residuum


Question # 188Which of the following is used as a solvent in deasphalting of petroleum products?A. FurfuralB. PropaneC. Methyl ethyl ketoneD. Liquid sulphur dioxide


Question # 189Penetration test determines the __________ of the grease.A. stiffnessB. lubricating properties (e.g. oilness)C. service temperatureD. variation in viscosity with temperature


Question # 190The reservoir rock containing petroleum hasA. low porosityB. high permeabilityC. high porosityD. both (b) and (c)


Question # 191Fuel oil is subjected to visbreaking to reduce itsA. pour pointB. viscosityC. pressure drop on pumpingD. all (a), (b) and (c)


Question # 192Which is the most desirable component of a good quality kerosene?A. i-paraffinsB. AromaticsC. n-paraffinsD. Naphthenes

Answer:-Option C




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Question # 193In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogenA. enhances the desulphurisation process.B. minimises coke formation.C. both (a) and (b).D. neither (a) nor (b).


Question # 194The yield of straight run LPG from crude oil is about __________ weight percent.A. 20-25B. 1-1.5C. 10-15D. 0.1-0.2


Question # 195Deoiling is the process of removal of oil from wax. It is done by the __________ process.A. solvent extractionB. sweatingC. resettlingD. all (a), (b) & (c)


Question # 196Smoke volatility index is equal to smoke point plusA. 0.42 x(% distilled at 204.C)B. 5 mmC. 0.84 x (% distilled at 204.C)D. 10 mm. approximately


Question # 197Mercaptans are added to liquefied petroleum gas (LPG) toA. reduce its cost.B. narrow down its explosion limit.C. assist in checking its leakage from cylinder.D. increase its calorific value.


Question # 198Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100.F. In Reid apparatus, the ratio of the volume of air chamber to thatof the liquid fuel chamber isA. 1B. 2C. 3D. 4


Question # 199Doctor's solution used for sweetening of petroleum products isA. sodium plumbiteB. sodium sulphite




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C. sodium thiosulphateD. lead sulphate


Question # 200Smoke point of kerosene expresses itsA. burning characteristics.B. luminosity characteristics.C. aromatic content directly.D. lamp wick wetting characteristics.


Question # 201The characterization factor of a crude oil is calculated as 12.5. It means that; it isA. paraffinicB. naphthenicC. intermediateD. none of these


Question # 202Which of the following has the highest octane number?A. AromaticsB. i-paraffinsC. NaphthenesD. OlefinsE. n-paraffins


Question # 203Choose the correct statement.A. Octane number of i-octane is zero.B. Octane number of paraffins increases with increasing number of carbon atoms.C. Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms.D. The aromatics have lower octane number than naphthenes with same number of carbon atoms.


Question # 204Which is the most effective catalyst used in catalytic cracking of petroleum products?A. Iron oxideB. NickelC. Vanadium pentoxideD. Zeolite


Question # 205Maximum use of petroleum coke is inA. adsorption refining operation.B. fuel gas manufacture.C. carbon electrode manufacture.D. iron ore reduction.





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Question # 206Carbon/hydrogen ratio (by weight) is maximum (out of following) forA. gasolineB. keroseneC. light gas oilD. heavy fuel oil


Question # 207The catalytic cracking of heavier petroleum fraction is done to produce mainlyA. gasolineB. asphaltC. diesel oilD. tar


Question # 208Catalyst used in the catalytic cracking isA. silica-aluminaB. silica gelC. vanadium pentoxideD. nickel


Question # 209Specific gravity of a petroleum product gives an indication of itsA. degree of refinement.B. hydrocarbon content type (aromatic or paraffinic).C. ease of atomisation.D. sulphur content.


Question # 210Pick out the wrong statement.A. Aromatics have higher specific gravity than paraffins,B. Gross calorific value (GCV) of petrofuels is equal to (12400 - 2100 Ï•2) where, Ï• is the specific gravity of the fuel at 15.5.C.C. Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre).D. Higher specific gravity of petrofuels means higher C/H ratio.


Question # 211The doctor's solution comprises of sodium plumbite inA. alcohalB. waterC. aqueous caustic sodaD. soda ash


Question # 212Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly ofA. propane & butaneB. butane & ethaneC. methane & ethaneD. methane & carbon monoxide

Answer:-




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Option ARead More Answers.

Question # 213The most commonly used feed stock for the reforming reactor isA. heavy fuel oilB. residuumC. straight run gasdineD. casing head gasoline


Question # 214Petroleum is believed to have originated from __________ sources.A. vegetableB. animalC. both (a) and (b)D. neither (a) nor (b)


Question # 215Which of the following has the lowest flash point of all?A. DieselB. KeroseneC. PetrolD. Furnace oil


Question # 216Cetane number of high speed diesel must be >=A. 30B. 45C. 75D. 95


Question # 217LSHS is a type of furnace oil, whichA. is more viscous than high viscosity furnace oil (HVFO).B. stands for low sulphur heavy stock.C. is an ideal fuel for metallurgical furnaces due to its lower sulphur content (< 1%).D. all (a), (b) and (c).


Question # 218Hydro-fining is the most recent and effective method for theA. removal of sulphur.B. improvement of smoke point.C. reduction of breathing loss.D. improvement of viscosity index.


Question # 219Isomerisation converts the __________ tot-paraffin's.A. paraffinsB. olefins




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C. naphthenesD. none of these


Question # 220Straight run petrol as compared to methyl/ethyl alcohol hasA. lower calorific value.B. lower octane number.C. higher specific gravity.D. higher ignition temperature.


Question # 221Crude oil is subjected to vacuum distillation in the last stage, becauseA. 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.


Question # 222Operating temperature and pressure in catalytic reforming is aboutA. 1-5 Kgf/cm2 & 200.C.B. 15-45 Kgf/cm2 & 450-550.C.C. 50 - 75 kgf/cm2 & 600 - 800.C.D. 5-10 kgf/cm2 & 150 - 250.C.


Question # 223With increase in density, the viscosity of petroleum productsA. increasesB. decreasesC. remains sameD. either (a) or (b)


Question # 224Detergent is added as an additive in engine lubricating oil toA. reduce deposit formation.B. keep contaminants in suspension.C. increase oxidation stability.D. prevent rusting.


Question # 225Removal of light fractions from crude oil is called itsA. sweeteningB. dehydrationC. stabilisationD. visbreaking


Question # 226




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Pick out the wrong statement.A. Lower boiling paraffins have higher octane number than higher paraffins.B. Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process.C. The most ideal feedstock for thermal reforming is dearomatised kerosene.D. Catalyst used in catalytic reforming is platinum on silica-alumina base.


Question # 22795% (by volume) of LPG at 760 mm Hg pressure will evaporate at __________ .C.A. 2B. -40C. 30D. 55


Question # 228A petroleum well is called 'dry', if it containsA. very little oil.B. no natural gas.C. only natural gas.D. all (a), (b) and (c).


Question # 229Aniline point is theA. characteristic property of diesel & lubricating oils.B. measure of aromatic content of oil.C. both (a) and (b).D. neither (a) nor (b).


Question # 230PetroleumA. is optically active.B. constitutes mainly of olefins.C. does not contain asphalt.D. does not contain aromatics.


Question # 231Aniline point of the diesel is a measure of its __________ content.A. aromaticB. paraffinC. olefinD. naphthene


Question # 232Presence of sulphur in gasolineA. leads to corrosion.B. increases lead susceptibility.C. decreases gum formation.D. helps during stabilisation.

Answer:-Option A




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Question # 233Which of the following additives improves the cetane number of diesel?A. Amyl nitrateB. Ethyl mercaptanC. Napthenic acidD. Tetra ethyl lead


Question # 234In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process.A. 100B. 200-300C. 1000-10000D. 10


Question # 235Choose the correct statement.A. Coking tendency increases with increasing molecular weight.B. Coking tendency decreases with increasing molecular weight.C. Higher pressure enhances coke formation.D. Coking is an exothermic reaction.


Question # 236In catalytic alkylation, higher iso-butane to olefin ratio givesA. low final boiling point productB. higher yieldC. both (a) and (b)D. neither (a) nor (b)


Question # 237In case of liquid petrofuels, momentary combustion is observed at itsA. flash point.B. preheating temperature corresponding to viscosity of 25 centistokes.C. flame temperature.D. fire point.


Question # 238PolymerizationA. produces i-octane from cracked gases containing i-butane and butene.B. causes olefins to combine with each other.C. causes aromatics to combine with each other.D. is aimed at producing lubricating oil.


Question # 239Both asphalt and wax are produced by __________ base crude oils.A. naphthenicB. asphaltC. paraffin




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D. mixed


Question # 240Which one is preferred for aircraft engine?A. High viscosity index lube oil.B. Low viscosity index lube oil.C. High freezing point aviation fuel.D. None of these.


Question # 241AlkylationA. causes olefins to combine with each other.B. causes olefins to combine with iso-paraffins.C. converts iso-paraffin into olefin.D. converts olefin into paraffin.


Question # 242Which of the following has the maximum .API gravity of all?A. DieselB. KeroseneC. PetrolD. Furnace oil


Question # 243Petroleum coke is used mainly .in theA. discoloration of yellow glycerine.B. sugar refining.C. manufacture of carbon electrode.D. blast furnace for reduction of iron ore.


Question # 244Pick out the wrong statement.A. Multigrade lubricating oils have high viscosity index.B. Paraffinic oil has very high viscosity index.C. Naphthenic oil has very low viscosity index.D. High viscosity index means a large change in viscosity with change in temperature.


Question # 245Research octane number refers to theA. low octane number motor fuels.B. high octane number motor fuels.C. high octane number aviation fuels.D. unleaded motor fuels.


Question # 246




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In sweetening process, solutizer agent used with caustic alkali isA. potassium isobutyrateB. sodium plumbiteC. methanolD. phenol


Question # 247Sulphuric acid treatment of petroleum products removes the __________ materials.A. gum formingB. color formingC. asphalticD. all (a), (b) & (c)


Question # 248Which is the most effective catalyst used in catalytic cracking of petroleum products?A. Iron oxideB. NickelC. Vanadium pentoxideD. Zeolite


Question # 249Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency?A. ParaffinsB. NaphthenesC. AromaticsD. Iso-paraffins


Question # 250Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2.A. 1.5B. 3C. 6D. 12


Question # 251Hydrogen 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 variesin the range of __________ kcal/kg.A. 600-750B. 250-350C. 1000-1500D. 2000-2500


Question # 252Which of the following processes consumes hydrogen?A. Fluid catalytic crackingB. VisbreakingC. Propane deasphaltingD. None of these

Answer:-Option A




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Question # 253Which of the following processes consumes hydrogen?A. Fluid catalytic crackingB. VisbreakingC. Propane deasphaltingD. None of these


Question # 254Petroleum deposits are detected by the.A. oil seepage at the surface of the earth.B. measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth.C. age & nature of rocks inside the crust of the earth.D. all (a), (b) and (c)


Question # 255Which of the following has the highest viscosity of all (at a given temperature)?A. NaphthaB. Fuel oilC. Light diesel oilD. Petrol


Question # 256Older crude petroleumA. is light and better.B. gives more distillates.C. gives less tar.D. all (a), (b) and (c).


Question # 257Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene?A. ReformingB. PyrolysisC. AlkylationD. Hydrocracking


Question # 258Diesel index is defined asA. (.API) x (Aniline Point, .F)/100B. (.API) x (Aniline Point, .C)/100C. (.API) x (100)/Aniline Point, .FD. (.API) x (100)/Aniline Point, .C


Question # 259The condesate obtained on compression of wet natural gas is termed asA. liquefied natural gasolineB. natural gasolineC. liquid natural gas




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D. none of these


Question # 260Pick out the correct statement.A. Paraffins have higher octane number than corresponding iso-paraffin.B. Paraffins have lower smoke point than aromatics.C. Suitability of kerosene as a fuel & as an illuminant may be determined by char value test.D. Aviation fuel should have very high cloud point.


Question # 261Crude petroleum oil is a __________ fuel.A. primaryB. fossilC. both (a) & (b)D. secondary


Question # 262Molecular weight of crude oil is in the range ofA. 100-120B. 230-250C. 450-550D. 600-850


Question # 263Catalyst used in the isomerisation isA. aluminium chlorideB. aluminaC. nickelD. phosphoric acid


Question # 264Octane numbers of motor gasoline used in India and America are respectivelyA. 87 & 94B. 94 && 87C. 94 && 100D. 83 && 100


Question # 265Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'.A. 1B. 5C. 15D. 25


Question # 266




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Reid vapour pressure of gasoline is the measure of itsA. pour pointB. cloud pointC. vapour locking tendencyD. carbon residue


Question # 267Pick out the correct statement about catalytic polymerisation.A. H2SO4 polymerisation process gives gasoline rich in unsaturates.B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive.C. both (a) and (b)D. neither (a) nor (b)


Question # 268High aniline point of diesel indicates that, itA. is highly aromatic.B. has a large ignition delay.C. is highly paraffinic.D. has a low diesel index.


Question # 269Boiling range of motor gasoline is an indication of theA. case of startingB. rate of accelerationC. vapour locking tendencyD. all (a), (b) and (c)


Question # 270Performance number of a liquid fuel is related to itsA. wax contentB. spontaneous ignition temperatureC. knocking tendencyD. sulphur content


Question # 271Naphtha yield in straight run distillation of crude oil may be about __________ percent.A. 2B. 6C. 12D. 18


Question # 272Mercapsol and Unisol processes are meant for theA. dearomatisation of keroseneB. removal of mercaptansC. dewaxingD. decoloration

Answer:-Option B




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Question # 273Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha isA. propane.B. diethylene glycol.C. aqueous solution (10% water) of diethylene glycol.D. methyl ethyl ketone (MEK).


Question # 274Which of the following is the most suitable feed for platforming process (reforming)?A. Olefinic hydrocarbonB. NaphthaC. Fuel oilD. Atmospheric residue


Question # 275Solvent used in Edeleanu process isA. furfuralB. propaneC. liquid SO2D. phenol


Question # 276Naphthenic acid is represented byA. CnH2n+2O2B. CnH2n-2O2C. CnH2n+2O2 (n >= 6)D. CnH2n+6O2 (n <= 6)


Question # 277Name the endothermic reaction out of the following:A. Catalytic cracking.B. Hydrocracking.C. Dehydrogeneration of naphthene to produce aromatic.D. Catalytic polymerisation.


Question # 278Natural gasoline is producedA. from oil wellsB. in oil refineriesC. by natural gas strippingD. none of these


Question # 279Main constituent of natural gas isA. CH4B. C2H2C. C2H4




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D. C2H6


Question # 280Raw 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.A. 5B. 10C. 25D. 100


Question # 281Petroleum coke is commercially produced by the __________ process.A. hydrocrackingB. visbreakingC. fluid catalytic crackingD. delayed coking


Question # 282Crude oil produced by Indian oil fields are predominantly __________ in nature.A. paraffinicB. naphthenicC. asphalticD. mixed base


Question # 283In solutizer sweetening process, solutizer solution used isA. methanol in Unisol process.B. naphthenic acid in Mercapsol process.C. both (a) and (b).D. neither (a) nor (b).


Question # 284Which of the following contains maximum sulfur?A. DieselB. PetrolC. KeroseneD. Fuel oil


Question # 285The best method of determining sulphur in crude oil is by the __________ method.A. KjeldahB. DumaC. Bomb calorimeterD. Junkar's calorimeter


Question # 286




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Catalyst used in alkylation process isA. sulphuric acidB. nickelC. silica gelD. alumina


Question # 287__________ base crude oil is also called asphaltic crude.A. ParaffinicB. NaphthenicC. MixedD. Aromatic


Question # 288Platforming is a __________ process.A. moving bedB. fluidised bedC. non-regenerative & fixed bedD. regenerative


Question # 289Aromatics have the highes __________ of all the hydrocarbons of same carbon atoms.A. smoke pointB. octane numberC. cetane numberD. viscosity


Question # 290Aniline point is the temperature at whichA. equal weight of diesel & the aniline are completely miscible.B. equal weight of aniline & the test sample are completely miscible.C. equal volume of aniline & the test sample are completely miscible.D. aniline vaporises.


Question # 291Pick out the wrong statement.A. A pale color of petroleum product indicates lower viscosity.B. Color of petroleum products indicates the degree of refinement.C. Lighter petroleum distillates are lighter in color than the heavier residual oils.D. Flouroscene of oils helps to detect its adulteration.


Question # 292Sweetening of petroleum product means the removal ofA. sulphur & its compoundsB. waterC. organic impuritiesD. wax

Answer:-Option A




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Question # 293ReformingA. uses naphtha as feedstock.B. does not much affect the molecular weight of the feed.C. improves the quality & yield of gasoline.D. all (a), (b) and (c).


Question # 294Which of the following has maximum hydrogen/carbon ratio (by weight)?A. NaphthaB. GasolineC. DieselD. Fuel oil


Question # 295Pyrolysis of kerosene or natural gasoline is done to produce mainly theA. olefins and aromaticsB. lighter paraffinsC. stabilised gasolineD. diesel


Question # 296Which of the following fractions of petroleum contains maximum sulphur?A. DieselB. GasolineC. NaphthaD. Atmospheric residue


Question # 297Reforming convertsA. olefins into paraffinsB. naphthenes into aromaticsC. naphthenes into olefins.D. naphthenes into paraffin.


Question # 298Percentage of straight run gasoline in a typical crude oil may be aroundA. 6B. 18C. 38D. 52


Question # 299Road grade bitumen is produced from vacuum residue by itsA. aerationB. pyrolysisC. hydrogenation




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http://www.globalguideline.com/interview_questions/Answer.php?a=Which_of_the_following_has_maximum_hydrogencarbon_ratio_by_weightA_NaphthaB_GasolineC_DieselD_Fuel_o

http://www.globalguideline.com/interview_questions/Answer.php?a=Pyrolysis_of_kerosene_or_natural_gasoline_is_done_to_produce_mainly_theA_olefins_and_aromaticsB_ligh

http://www.globalguideline.com/interview_questions/Answer.php?a=Which_of_the_following_fractions_of_petroleum_contains_maximum_sulphurA_DieselB_GasolineC_NaphthaD_A

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D. steam reforming


Question # 300Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about __________ of that of water (i.e. 1gm/c.c).A. one fourthB. one thirdC. halfD. one eighth


Question # 301Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm.A. 1B. 50C. 5000D. 10000


Question # 302CnH2n is the general formula forA. olefinsB. naphthenesC. both (a) and (b)D. neither (a) nor (b)


Question # 303Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas.A. unsaturated hydrocarbon contentB. calorific valueC. quantity of propaneD. quantity of butane


Question # 304Pick out the wrong statement.A. Alkylation produces a larger iso-paraf-fin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin.B. Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts.C. All the alkylation processes use very high temperature (> 1000.C).D. Gasoline having an octane number of 90 can be produced by alkylation process.


Question # 305H/C ratio (by weight) for the same number of carbon atoms is the highest in case ofA. aromaticsB. paraffinsC. olefinsD. naphthenes


Question # 306




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Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil?A. Modern theoryB. Carbide theoryC. Engler theoryD. all (a), (b) and (c)


Question # 307Higher vapour pressure of gasoline indicatesA. low flash pointB. high breathing lossC. both (a) and (b)D. neither (a) nor (b)


Question # 308Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known asA. a-methyl naphthalene.B. 2-2-4 tri methyl pentane.C. 1, 3 butadiene.D. tetra methyl ethylene.


Question # 309Pour point of a petrofuel isA. multiple of 3.F.B. multiple of 5.F.C. 5.C below the temperature at which oil ceases to flow.D. none of these.


Question # 310In catalytic cracking, theA. gasoline obtained has a very low octane number.B. pressure & temperature is very high.C. gasoline obtained has very high aromatic content.D. gasoline obtained has very high amount of gum forming compounds.


Question # 311LPG stands forA. liquid petroleum gasB. liquified petrol gasC. liquid petrol gasD. liquefied petroleum gas


Question # 312"Breathing loss" on storage of gasoline occurs due to theA. presence of unsaturated air.B. fluctuation of ambient temperature during day and night.C. both (a) and (b).D. neither (a) nor (b).

Answer:-Option B




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Read More Answers.

Question # 313Which is an anticing compound?A. Amyl nitrateB. AlcohalsC. MercaptansD. Pyridine


Question # 314The terminology used for the bottom most product from the vacuum crude distillation unit isA. residual crudeB. residuumC. reduced crudeD. petrolatum


Question # 315Which of the following is the easiest to crack?A. ParaffinsB. OlefinsC. NaphthenesD. Aromatics


Question # 316Flash point of a liquid petroleum fuel gives an idea about itsA. volatility.B. explosion hazards characteristics.C. nature of boiling point diagram.D. all (a), (b) and (c)


Question # 317Clay treatment of petroleum productsA. decolorises & stabilises cracked gasoline.B. desulphurise straight run gasoline & kerosene.C. adsorb arsenic from feedstock to catalytic reforming.D. all (a), (b) & (c).


Question # 318Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it hasA. high pour point and low smoke point.B. low viscosity index.C. high self-ingnition temperature.D. all (a), (b) and.(c).


Question # 319__________ treatment is done for appreciable improvement in viscosity index of lubricating oil.A. AcidB. Solvent extractionC. Alkali




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http://www.globalguideline.com/interview_questions/Answer.php?a=Flash_point_of_a_liquid_petroleum_fuel_gives_an_idea_about_itsA_volatilityB_explosion_hazards_charac

http://www.globalguideline.com/interview_questions/Answer.php?a=Clay_treatment_of_petroleum_productsA_decolorises__stabilises_cracked_gasolineB_desulphurise_straigh

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D. Clay


Question # 320Water content in the crude oil as it comes out of oil well may be upto __________ percent.A. 2B. 5C. 10D. 25


Question # 321Waxy crudes are treated with chemical additives mainly toA. depress its pour pointB. dissolve waxC. precipitate waxD. remove wax


Question # 322__________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.A. MagnesiumB. PotassiumC. CalciumD. Sodium


Question # 323Molecular weight of petrol may be aboutA. 40-60B. 100-130C. 250-300D. 350-400


Question # 324Which of the following factors does not govern the mechanism of petroleum formation from organic sources?A. pH of the soilB. Bacterial actionC. HeatD. Pressure


Question # 325Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).A. 5-10B. 30-80C. 150-250D. 350-400


Question # 326




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http://www.globalguideline.com/interview_questions/Answer.php?a=Waxy_crudes_are_treated_with_chemical_additives_mainly_toA_depress_its_pour_pointB_dissolve_waxC_pre

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Octane number of n-heptane is assumed to beA. 100B. 0C. 70D. âˆž


Question # 327Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.A. 1 to 5B. 30 to 80C. 250 to 350D. 450 to 500


Question # 328Liquefied Petroleum Gas (LPG) is mainly a mixture ofA. propane & butaneB. methane & ethaneC. high boiling olefinsD. high boiling naphthenes


Question # 329Concentration of H2SO4 catalyst in alkyla-tion is kept between 90-98%, because H2SO4 having concentrationA. less than 90% promotes polymerisation.B. more than 98% promotes cracking.C. both (a) and (b).D. neither (a) nor (b).


Question # 330High aniline point of a petrofuel (say diesel) indicates thatA. it is highly aromatic in nature.B. it is highly paraffinic in nature.C. it has a very low diesel index.D. its ignition quality is very poor.


Question # 331Do you know what is Petroleum Engineering?

Answer:-Petroleum engineering is a field of engineering concerned with the activities related to the production of hydrocarbons, which can be either crude oil or natural gas.Exploration and Production are deemed to fall within the upstream sector of the oil and gas industry.Read More Answers.

Question # 332Petroleum Engineering Informational interview questions:

Answer:-*How do you see your job relating to the overall goals?*What steps do you follow to study a problem before making a decision?*How do you decide what gets top priority when scheduling your time?*What major challenges and problems did you face?*Give an example of a time you successfully worked as Petroleum Engineer on a team.*Why are you leaving your present job?*What are your expectations regarding promotions and salary increases?Read More Answers.




http://www.globalguideline.com/interview_questions/Answer.php?a=Octane_number_of_n-heptane_is_assumed_to_beA_100B_0C_70D_8734

http://www.globalguideline.com/interview_questions/Answer.php?a=Vacuum_maintained_in_the_vacuum_distillation_column_in_oil_refinery_is_in_the_range_of_about________

http://www.globalguideline.com/interview_questions/Answer.php?a=Liquefied_Petroleum_Gas_LPG_is_mainly_a_mixture_ofA_propane__butaneB_methane__ethaneC_high_boiling_o

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http://www.globalguideline.com/interview_questions/Answer.php?a=Petroleum_Engineering_Informational_interview_questions




Question # 333Petroleum Engineering Basic interview questions:

Answer:-*What would you say are your strong points?*What are you expecting from Petroleum Engineer job in the future?*What kinds of decisions are most difficult for you?*What will you do if you don't get this position?*Did you feel you progressed satisfactorily in your last Petroleum Engineer job?*What have you done to contribute toward a teamwork environment?*Have you ever had to introduce a policy change to your work group?Read More Answers.

Question # 334Petroleum Engineering Face to Face Interview questions:

Answer:-*Have you ever dealt with company policy you weren't in agreement with? How?*Which of your jobs had the most rapid change?*What relevant Petroleum Engineer experience do you have?*Are you willing to relocate?*Do you ever take work home with you?*Try to define processes and methodologies you use in your Petroleum Engineer job.*What's your salary history?Read More Answers.

Question # 335Petroleum Engineering Phone interview questions:

Answer:-* What salary are you seeking?* Why did you select Petroleum Engineer as your profession?* Describe how you have balanced your academic work with your extracurricular activities?* What kinds of things really get your excited?* Why do you believe you are qualified for this Petroleum Engineer position?* What are the techniques that you use to clarify obscure message meanings?Read More Answers.

Question # 336Petroleum Engineering General job interview questions:

Answer:-* What do you feel is the best educational preparation for this Petroleum Engineer job?* What will you miss about your present or last job?* How do you feel about taking no for an answer?* What motivates you to work as Petroleum Engineer?* Give me examples of projects tasks you started on your own?* Have you ever challenged, shaken old work methods?Read More Answers.

Question # 337Petroleum Engineering First interview Questions:

Answer:-* How do you show an interest in what another person is saying?* Tell me about a difficult experience you had as Petroleum Engineer?* What do you do if you disagree with a co-worker?* What questions do you have for me?Read More Answers.

Question # 338Which of the following petroleum products contain minimum sulphur?A. NaphthaB. KeroseneC. LSHSD. Furnace oil


Question # 339Catalyst used in isomerisation process isA. H2SO4




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http://www.globalguideline.com/interview_questions/Answer.php?a=Which_of_the_following_petroleum_products_contain_minimum_sulphurA_NaphthaB_KeroseneC_LSHSD_Furnace_




B. H3PO4C. HFD. AlCl3


Question # 340A multi grade lubricating oil means an oil having highA. viscosity indexB. viscosityC. aniline pointD. flash point


Question # 341Most widely used solvent for dewaxing isA. methyl-ethyl-ketone (MEK)B. naphthaC. petroleum etherD. sodium plumbite





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Petroleum Engineering Interview Questions And Answers Guide. · Petroleum Engineering Interview Questions And Answers Global Guideline . COM In petroleum refining, the process used