Q.1

Paraffin base crude oil as compared to asphalt base crude gives

  • higher yield of straight run gasoline.
  • higher octane number gasoline.
  • lower viscosity index lube oil.
  • poorer yield of lube oil.
Q.2

Illuminating characteristics of kerosene is expressed by its

  • smoke point
  • aniline point
  • luminosity number
  • aromatic content
Q.3

Diesel index.(an alternative index for expressing the quality of diesel) is

  • determined by using a test engine.
  • not related to aniline point.
  • equal to cetane number plus 3.
  • all (a), (b) & (c).
Q.4

Flash point of atmospheric distillation residue is determined by __________ apparates.

  • Pensky-Martens (closed cup type).
  • Abel.
  • Cleveland (open cup type)
  • none of these.
Q.5

__________ is not an important refinery process for upgrading the quality of lubricating oil.

  • Deoiling
  • Solvent refinning
  • Clay treatment
  • Hydrotreatment
Q.6

Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol.

  • waxes
  • mercaptans
  • asphalt
  • diolefins
Q.7

__________ converts n-paraffins to i-paraffins.

  • Alkylation
  • Polymerisation
  • Isomerisation
  • none of these
Q.8

__________ determination is not a very significant and important test for gasoline.

  • Gum & sulphur content
  • Viscosity
  • Octane number
  • Reid vapor pressure
Q.9

Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene.

  • Smoking tendency of hydrocarbons increases in the order : paraffins → isoparaffins → naphthenes → aromatics.
  • Smoking tendency of paraffins increases with decrease in its molecular weight.
  • Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond.
  • Smoking tendency of aromatics decreases with increase in its molecular weight.
Q.10

True boiling point apparatus is used for the

  • determination of characterisation factor.
  • evaluation of oil stocks.
  • determination of true vapour pressure.
  • none of these.
Q.11

Which of the following constituents present in petroleum is responsible for ash formation?

  • Nitrogen compounds
  • Organometallic compounds
  • Sulphur compounds
  • Oxygen compounds
Q.12

Octane number of gasoline is a measure of its

  • resistance to knock.
  • ignition delay.
  • ignition temperature.
  • smoke point.
Q.13

Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about

  • 0.1
  • 1
  • 2.5
  • 3.5
Q.14

Pick out the undesirable property for a solvent meant for dewaxing of lube oil.

  • Complete miscibility with oil.
  • High solubility of wax in the solvent.
  • Both (a) and (b).
  • Neither (a) nor (b).
Q.15

The main use of heavy gas oil produced by the vacuum distillation unit is as a

  • blending component for kerosene.
  • blending component for petrol.
  • feedstock for fluid catalytic cracking unit.
  • none of these.
Q.16

Visbreaking process is used mainly for making

  • high cetane diesel
  • high octane gasoline
  • fuel oil
  • smoke free kerosene
Q.17

The colour of gasoline is an indication of its

  • octane number.
  • lead susceptibility.
  • gum forming tendency & thoroughness of refining.
  • none of these.
Q.18

Which of the following has the lowest viscosity (at a given temperature) of all?

  • Naphtha
  • Kerosene
  • Diesel
  • Lube oil
Q.19

Solvent used in duo-sol extraction for lube oil upgradation is a mixture of

  • propane & phenol-cresol mixture.
  • methyl ethyl ketone & glycol.
  • phenol & furfural.
  • propane & liquid sulphur dioxide.
Q.20

Testing of the knocking characteristics of petrofuels is done in a __________ engine.

  • Carnot
  • CFR (Co-operative fuel research)
  • Stirling
  • diesel
Q.21

Antioxidants are added in petrol to

  • impart colour to it, for easy identification.
  • minimise the gum formation.
  • prevent icing of the carburettor.
  • prevent the lead build up in engines.
Q.22

In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones.

  • sulphur increases
  • sulphur decreases
  • nitrogen decreases
  • none of these
Q.23

Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst.

  • bauxite
  • fuller's earth
  • activated clay
  • all (a), (b) & (c)
Q.24

The coking process normally mostly used in Indian oil refineries is the __________ coking process.

  • delayed
  • flexi
  • fluid
  • contact
Q.25

Pick out the additive property of a lube oil out of following.

  • °API gravity
  • Specific gravity
  • Viscosity
  • Flashpoint
Q.26

Catalyst used in catalytic reforming is

  • platinum on alumina
  • nickel
  • iron
  • aluminium chloride
Q.27

Pour point and freezing point is equal for

  • petrol
  • diesel
  • water
  • crude petroleum
Q.28

Which of the following is used as a catalyst in fluidised bed catalytic cracking ?

  • Silica-magnesia
  • Silica-alumina
  • Bentonite clays
  • All (a), (b) and (c)
Q.29

Casing head gasoline is the liquid

  • butane.
  • propane.
  • natural gas.
  • gasoline separated from wet natural gas by compression.
Q.30

Stabilisation of gasoline (petrol) means

  • removal of dissolved gases from it.
  • increasing its oxidation stability.
  • improving its lead susceptibility.
  • increasing its vapour pressure.
Q.31

Operating condition in the electrical dehydrators for crude oil is about

  • 6.5 kgf/Cm2 & 95°C.
  • 1 atm. & 110 °C.
  • 20 kgf/cm2 & 110°C.
  • 50 atm. and 150°C.
Q.32

The octane number of aviation gasoline may be

  • 79
  • 87
  • 97
  • >100
Q.33

Name the hydrocarbon having the poorest oxidation stability.

  • naphthene
  • olefin
  • paraffin
  • aromatics
Q.34

Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.

  • polymer
  • unleaded
  • casing head
  • straight run
Q.35

Glycol added to petrol acts as a/an __________ agent.

  • anti-knocking
  • anti-icing
  • anti-gum forming
  • dewaxing
Q.36

The proper arrangement of the petroleum fractions in order of their boiling points is

  • lubricating oil > diesel > petrol > LPG
  • lubricating oil > petrol > diesel > LPG
  • petrol > lubricating oil > diesel > LPG
  • petrol > diesel > LPG > lubricating oil
Q.37

Sulphur content in lighter and heavier petroleum products is generally determined respectively by

  • lamp method and bomb method.
  • bomb method and lamp method.
  • bomb method and quartz tube method.
  • quartz tube method and lamp method.
Q.38

Crude oil is pumped by a __________ pump.

  • gear
  • centrifugal
  • screw
  • reciprocating
Q.39

The first crude oil refinery of India is located at

  • Naharkatiya
  • Digboi
  • Kochin
  • Madras
Q.40

The most widely used crude topping column in refineries is the __________ column.

  • bubble-cap
  • packed bed
  • fluidised bed
  • perforated plate
Q.41

Phenols are added in gasoline to

  • improve the octane number.
  • act as an antioxidant.
  • reduce its viscosity.
  • increase its pour point.
Q.42

Which of the following categories of gasoline has the highest lead susceptibility ?

  • Straight run gasoline
  • Platinum reformed gasoline
  • Catalytical cracked gasoline
  • Polymer gasoline
Q.43

Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil

  • gives higher yield of petrol.
  • lower octane number of petrol.
  • higher sulphur content in the product.
  • higher gum forming material in petrol.
Q.44

Octane number of gasoline produced by two stage fluidised catalytic cracking process is

  • 80
  • 87
  • 92
  • 97
Q.45

Equal 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 the diesel is __________ the room temperature.

  • more than
  • less than
  • same as
  • either more or less; depends on the room temperature
Q.46

Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic

  • cracking
  • polymerisation
  • reforming
  • isomerisation
Q.47

Petrolatum is

  • same as petroleum ether.
  • petroleum coke.
  • a mixture of microcrystalline wax in viscous hydrocarbon liquids.
  • none of these.
Q.48

Olefins are

  • saturated hydrocarbons.
  • unsaturated cyclic compounds (hydrocarbons).
  • present in substantially good quantity in crude petroleum.
  • none of these.
Q.49

Which of the following is desirable in diesel and kerosene but is undersirable in gasoline ?

  • Aromatics
  • Mercaptans
  • Paraffins
  • Naphthenic acid
Q.50

Deoiling of wax is done by its

  • heating
  • cooling
  • solvent extraction
  • both(b)&(c)
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