100 Latest Petroleum Engineering Objective Questions
Q – 1 Most widely used solvent for dewaxing is
A. methyl-ethyl-ketone (MEK)
B. naphtha
C. petroleum ether
D. sodium plumbite
Ans- Option A
Q – 2 A multi grade lubricating oil means an oil having high
A. viscosity index
B. viscosity
C. aniline point
D. flash point
Ans- Option A
Q – 3 Catalyst used in isomerisation process is
A. H2SO4
B. H3PO4
C. HF
D. AlCl3
Ans- Option D
Q – 4 Which of the following petroleum products contain minimum sulphur?
A. Naphtha
B. Kerosene
C. LSHS
D. Furnace oil
Ans- Option A
Q – 11 Do you know what is Petroleum Engineering?
Ans- 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.
Q – 12 High aniline point of a petrofuel (say diesel) indicates that
A. 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.
Ans- Option B
Q – 13 Concentration of H2SO4 catalyst in alkyla-tion is kept between 90-98%, because H2SO4 having concentration
A. less than 90% promotes polymerisation.
B. more than 98% promotes cracking.
C. both (a) and (b).
D. neither (a) nor (b).
Ans- Option C
Q – 14 Liquefied Petroleum Gas (LPG) is mainly a mixture of
A. propane & butane
B. methane & ethane
C. high boiling olefins
D. high boiling naphthenes
Ans- Option A
Q – 15 Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.
A. 1 to 5
B. 30 to 80
C. 250 to 350
D. 450 to 500
Ans- Option B
Q – 16 Octane number of n-heptane is assumed to be
A. 100
B. 0
C. 70
D. ∞
Ans- Option B
Q – 17 Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
A. 5-10
B. 30-80
C. 150-250
D. 350-400
Ans- Option B
Q – 18 Which of the following factors does not govern the mechanism of petroleum formation from organic sources?
A. pH of the soil
B. Bacterial action
C. Heat
D. Pressure
Ans- Option A
Q – 19 Molecular weight of petrol may be about
A. 40-60
B. 100-130
C. 250-300
D. 350-400
Ans- Option B
Q – 20 __________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.
A. Magnesium
B. Potassium
C. Calcium
D. Sodium
Ans- Option A
Q – 21 Waxy crudes are treated with chemical additives mainly to
A. depress its pour point
B. dissolve wax
C. precipitate wax
D. remove wax
Ans- Option A
Q – 22 Water content in the crude oil as it comes out of oil well may be upto __________ percent.
A. 2
B. 5
C. 10
D. 25
Ans- Option D
Q – 23 __________ treatment is done for appreciable improvement in viscosity index of lubricating oil.
A. Acid
B. Solvent extraction
C. Alkali
D. Clay
Ans- Option B
Q – 24 Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has
A. high pour point and low smoke point.
B. low viscosity index.
C. high self-ingnition temperature.
D. all (a), (b) and.(c).
Ans- Option B
Q – 25 Clay treatment of petroleum products
A. decolorises & stabilises cracked gasoline.
B. desulphurise straight run gasoline & kerosene.
C. adsorb arsenic from feedstock to catalytic reforming.
D. all (a), (b) & (c).
Ans- Option D
Q – 26 Flash point of a liquid petroleum fuel gives an idea about its
A. volatility.
B. explosion hazards characteristics.
C. nature of boiling point diagram.
D. all (a), (b) and (c)
Ans- Option D
Q – 27 Which of the following is the easiest to crack?
A. Paraffins
B. Olefins
C. Naphthenes
D. Aromatics
Ans- Option A
Q – 28 The terminology used for the bottom most product from the vacuum crude distillation unit is
A. residual crude
B. residuum
C. reduced crude
D. petrolatum
Ans- Option B
Q – 29 Which is an anticing compound?
A. Amyl nitrate
B. Alcohals
C. Mercaptans
D. Pyridine
Ans- Option B
Q – 30 “Breathing loss” on storage of gasoline occurs due to the
A. presence of unsaturated air.
B. fluctuation of ambient temperature during day and night.
C. both (a) and (b).
D. neither (a) nor (b).
Ans- Option B
Q – 31 LPG stands for
A. liquid petroleum gas
B. liquified petrol gas
C. liquid petrol gas
D. liquefied petroleum gas
Ans- Option D
Q – 32 In catalytic cracking, the
A. 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.
Ans- Option C
Q – 33 Pour point of a petrofuel is
A. multiple of 3F.
B. multiple of 5F.
C. 5C below the temperature at which oil ceases to flow.
D. none of these.
Ans- Option C
Q – 34 Iso-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 as
A. α-methyl naphthalene.
B. 2-2-4 tri methyl pentane.
C. 1, 3 butadiene.
D. tetra methyl ethylene.
Ans- Option B
Q – 35 Higher vapour pressure of gasoline indicates
A. low flash point
B. high breathing loss
C. both (a) and (b)
D. neither (a) nor (b)
Ans- Option D
Q – 36 Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil?
A. Modern theory
B. Carbide theory
C. Engler theory
D. all (a), (b) and (c)
Ans- Option B
Q – 37 H/C ratio (by weight) for the same number of carbon atoms is the highest in case of
A. aromatics
B. paraffins
C. olefins
D. naphthenes
Ans- Option D
Q – 38 Pick 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 (> 1000C).
D. Gasoline having an octane number of 90 can be produced by alkylation process.
Ans- Option C
Q – 39 Natural 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 content
B. calorific value
C. quantity of propane
D. quantity of butane
Ans- Option B
Q – 40 CnH2n is the general formula for
A. olefins
B. naphthenes
C. both (a) and (b)
D. neither (a) nor (b)
Ans- Option C
Q – 41 Ethyl 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. 1
B. 50
C. 5000
D. 10000
Ans- Option B
Q – 42 Liquefied 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. 1 gm/c.c).
A. one fourth
B. one third
C. half
D. one eighth
Ans- Option C
Q – 43 Road grade bitumen is produced from vacuum residue by its
A. aeration
B. pyrolysis
C. hydrogenation
D. steam reforming
Ans- Option D
Q – 44 Percentage of straight run gasoline in a typical crude oil may be around
A. 6
B. 18
C. 38
D. 52
Ans- Option D
Q – 45 Reforming converts
A. olefins into paraffins
B. naphthenes into aromatics
C. naphthenes into olefins.
D. naphthenes into paraffin.
Ans- Option B
Q – 46 Which of the following fractions of petroleum contains maximum sulphur?
A. Diesel
B. Gasoline
C. Naphtha
D. Atmospheric residue
Ans- Option D
Q – 47 Pyrolysis of kerosene or natural gasoline is done to produce mainly the
A. olefins and aromatics
B. lighter paraffins
C. stabilised gasoline
D. diesel
Ans- Option A
Q – 48 Which of the following has maximum hydrogen/carbon ratio (by weight)?
A. Naphtha
B. Gasoline
C. Diesel
D. Fuel oil
Ans- Option B
Q – 49 Reforming
A. 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).
Ans- Option D
Q – 50 Sweetening of petroleum product means the removal of
A. sulphur & its compounds
B. water
C. organic impurities
D. wax
Ans- Option A
Q – 51 Pick 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.
Ans- Option A
Q – 52 Aniline point is the temperature at which
A. 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.
Ans- Option C
Q – 53 Aromatics have the highes __________ of all the hydrocarbons of same carbon atoms.
A. smoke point
B. octane number
C. cetane number
D. viscosity
Ans- Option B
Q – 54 Platforming is a __________ process.
A. moving bed
B. fluidised bed
C. non-regenerative & fixed bed
D. regenerative
Ans- Option C
Q – 55 __________ base crude oil is also called asphaltic crude.
A. Paraffinic
B. Naphthenic
C. Mixed
D. Aromatic
Ans- Option B
Q – 56 Catalyst used in alkylation process is
A. sulphuric acid
B. nickel
C. silica gel
D. alumina
Ans- Option A
Q – 57 The best method of determining sulphur in crude oil is by the __________ method.
A. Kjeldah
B. Duma
C. Bomb calorimeter
D. Junkar’s calorimeter
Ans- Option C
Q – 58 Which of the following contains maximum sulfur?
A. Diesel
B. Petrol
C. Kerosene
D. Fuel oil
Ans- Option D
Q – 59 In solutizer sweetening process, solutizer solution used is
A. methanol in Unisol process.
B. naphthenic acid in Mercapsol process.
C. both (a) and (b).
D. neither (a) nor (b).
Ans- Option C
Q – 60 Crude oil produced by Indian oil fields are predominantly __________ in nature.
A. paraffinic
B. naphthenic
C. asphaltic
D. mixed base
Ans- Option C
Q – 61 Petroleum coke is commercially produced by the __________ process.
A. hydrocracking
B. visbreaking
C. fluid catalytic cracking
D. delayed coking
Ans- Option D
Q – 62 Raw 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. 5
B. 10
C. 25
D. 100
Ans- Option C
Q – 63 Main constituent of natural gas is
A. CH4
B. C2H2
C. C2H4
D. C2H6
Ans- Option A
Q – 64 Natural gasoline is produced
A. from oil wells
B. in oil refineries
C. by natural gas stripping
D. none of these
Ans- Option C
Q – 65 Name the endothermic reaction out of the following:
A. Catalytic cracking.
B. Hydrocracking.
C. Dehydrogeneration of naphthene to produce aromatic.
D. Catalytic polymerisation.
Ans- Option C
Q – 66 Naphthenic acid is represented by
A. CnH2n+2O2
B. CnH2n-2O2
C. CnH2n+2O2 (n ≥ 6)
D. CnH2n+6O2 (n ≤ 6)
Ans- Option B
Q – 67 Solvent used in Edeleanu process is
A. furfural
B. propane
C. liquid SO2
D. phenol
Ans- Option C
Q – 68 Which of the following is the most suitable feed for platforming process (reforming)?
A. Olefinic hydrocarbon
B. Naphtha
C. Fuel oil
D. Atmospheric residue
Ans- Option A
Q – 69 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).
Ans- Option C
Q – 70 Mercapsol and Unisol processes are meant for the
A. dearomatisation of kerosene
B. removal of mercaptans
C. dewaxing
D. decoloration
Ans- Option B
Q – 71 Naphtha yield in straight run distillation of crude oil may be about __________ percent.
A. 2
B. 6
C. 12
D. 18
Ans- Option B
Q – 72 Performance number of a liquid fuel is related to its
A. wax content
B. spontaneous ignition temperature
C. knocking tendency
D. sulphur content
Ans- Option B
Q – 73 Boiling range of motor gasoline is an indication of the
A. case of starting
B. rate of acceleration
C. vapour locking tendency
D. all (a), (b) and (c)
Ans- Option B
Q – 74 High aniline point of diesel indicates that, it
A. is highly aromatic.
B. has a large ignition delay.
C. is highly paraffinic.
D. has a low diesel index.
Ans- Option C
Q – 75 Pick 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)
Ans- Option B
Q – 76 Reid vapour pressure of gasoline is the measure of its
A. pour point
B. cloud point
C. vapour locking tendency
D. carbon residue
Ans- Option C
Q – 77 Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’.
A. 1
B. 5
C. 15
D. 25
Ans- Option B
Q – 78 Octane numbers of motor gasoline used in India and America are respectively
A. 87 & 94
B. 94 && 87
C. 94 && 100
D. 83 && 100
Ans- Option A
Q – 79 Catalyst used in the isomerisation is
A. aluminium chloride
B. alumina
C. nickel
D. phosphoric acid
Ans- Option A
Q – 80 Molecular weight of crude oil is in the range of
A. 100-120
B. 230-250
C. 450-550
D. 600-850
Ans- Option B
Q – 81 Crude petroleum oil is a __________ fuel.
A. primary
B. fossil
C. both (a) & (b)
D. secondary
Ans- Option C
Q – 82 Pick 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.
Ans- Option B
Q – 83 The condesate obtained on compression of wet natural gas is termed as
A. liquefied natural gasoline
B. natural gasoline
C. liquid natural gas
D. none of these
Ans- Option B
Q – 84 Diesel index is defined as
A. (API) x (Aniline Point, F)/100
B. (API) x (Aniline Point, C)/100
C. (API) x (100)/Aniline Point, F
D. (API) x (100)/Aniline Point, C
Ans- Option A
Q – 85 Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene?
A. Reforming
B. Pyrolysis
C. Alkylation
D. Hydrocracking
Ans- Option A
Q – 86 Older crude petroleum
A. is light and better.
B. gives more distillates.
C. gives less tar.
D. all (a), (b) and (c).
Ans- Option B
Q – 87 Which of the following has the highest viscosity of all (at a given temperature)?
A. Naphtha
B. Fuel oil
C. Light diesel oil
D. Petrol
Ans- Option B
Q – 88 Petroleum 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)
Ans- Option D
Q – 89 Which of the following processes consumes hydrogen?
A. Fluid catalytic cracking
B. Visbreaking
C. Propane deasphalting
D. None of these
Ans- Option A
Q – 90 Which of the following processes consumes hydrogen?
A. Fluid catalytic cracking
B. Visbreaking
C. Propane deasphalting
D. None of these
Ans- Option A
Q – 91 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
Ans- Option A
Q – 92 Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2.
A. 1.5
B. 3
C. 6
D. 12
Ans- Option B
Q – 93 Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency?
A. Paraffins
B. Naphthenes
C. Aromatics
D. Iso-paraffins
Ans- Option A
Q – 94 Which is the most effective catalyst used in catalytic cracking of petroleum products?
A. Iron oxide
B. Nickel
C. Vanadium pentoxide
D. Zeolite
Ans- Option D
Q – 95 Sulphuric acid treatment of petroleum products removes the __________ materials.
A. gum forming
B. color forming
C. asphaltic
D. all (a), (b) & (c)
Ans- Option D
Q – 96 In sweetening process, solutizer agent used with caustic alkali is
A. potassium isobutyrate
B. sodium plumbite
C. methanol
D. phenol
Ans- Option A
Q – 97 Research octane number refers to the
A. low octane number motor fuels.
B. high octane number motor fuels.
C. high octane number aviation fuels.
D. unleaded motor fuels.
Ans- Option D
Q – 98 Pick 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.
Ans- Option D
Q – 99 Petroleum coke is used mainly .in the
A. discoloration of yellow glycerine.
B. sugar refining.
C. manufacture of carbon electrode.
D. blast furnace for reduction of iron ore.
Ans- Option C
Q – 100 Which of the following has the maximum API gravity of all?
A. Diesel
B. Kerosene
C. Petrol
D. Furnace oil
Ans- Option C