Q.1

Lane and Garton classification of petroleum is based on its

  • composition
  • specific gravity
  • optical properties
  • viscosity
Q.2

Which of the following is a non-regenerative fixed bed catalytic reforming process ?

  • Hydroforming
  • Thermofer catalytic reforming
  • Platforming
  • Hyperforming
Q.3

Which is an anticing compound ?

  • Amyl nitrate
  • Alcohals
  • Mercaptans
  • Pyridine
Q.4

The terminology used for the bottom most product from the vacuum crude distillation unit is

  • residual crude
  • residuum
  • reduced crude
  • petrolatum
Q.5

Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has

  • high pour point and low smoke point.
  • low viscosity index.
  • high self-ingnition temperature.
  • all (a), (b) and.(c).
Q.6

Catalyst used in isomerisation process is

  • H2SO4
  • H3PO4
  • HF
  • AlCl3
Q.7

Which of the following fractions of petroleum contains maximum sulphur ?

  • Diesel
  • Gasoline
  • Naphtha
  • Atmospheric residue
Q.8

Reforming converts

  • olefins into paraffins
  • naphthenes into aromatics
  • naphthenes into olefins.
  • naphthenes into paraffin.
Q.9

A multigrade lubricating oil means an oil having high

  • viscosity index
  • viscosity
  • aniline point
  • flash point
Q.10

__________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.

  • Magnesium
  • Potassium
  • Calcium
  • Sodium
Q.11

Petroleum

  • is optically active.
  • constitutes mainly of olefins.
  • does not contain asphalt.
  • does not contain aromatics.
Q.12

Which is the most desirable component of a good quality kerosene ?

  • i-paraffins
  • Aromatics
  • n-paraffins
  • Naphthenes
Q.13

Bottom product of atmospheric pressure crude oil distillation column is termed as

  • reduced crude
  • heavy ends
  • asphalt
  • residuum
Q.14

Reforming

  • uses naphtha as feedstock.
  • does not much affect the molecular weight of the feed.
  • improves the quality & yield of gasoline.
  • all (a), (b) and (c).
Q.15

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.

  • unsaturated hydrocarbon content
  • calorific value
  • quantity of propane
  • quantity of butane
Q.16

Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value ofIso-octance is chemically known as

  • α-methyl naphthalene.
  • 2-2-4 tri methyl pentane.
  • 1, 3 butadiene.
  • tetra methyl ethylene.
Q.17

Higher pressure in the reforming reactor

  • increases coke formation.
  • increases the rate of reaction.
  • produces high octane number gasoline.
  • none of these.
Q.18

Concentration of H2SO4 catalyst in alkyla-tion is kept between 90-98%, because H2SO4 having concentration

  • less than 90% promotes polymerisation.
  • more than 98% promotes cracking.
  • both (a) and (b).
  • neither (a) nor (b).
Q.19

Aniline point is a property of the

  • diesel
  • LPG
  • naphtha
  • gasoline
Q.20

With increase in the molecular weight of aromatic present in kerosene, its smoking tendency

  • increases
  • decreases
  • remains same
  • is unpredictable
Q.21

Aniline point of high speed diesel may be about __________ °C.

  • 150
  • 35
  • 70
  • 105
Q.22

Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?

  • PCM
  • Tar
  • Light diesel oil
  • Low viscosity furnace oil
Q.23

Which of the following is not an important property of fuel oil/furnace oil ?

  • Sulphur content
  • Viscosity
  • Aniline point
  • Flash point
Q.24

In sweetening process, solutizer agent used with caustic alkali is

  • potassium isobutyrate
  • sodium plumbite
  • methanol
  • phenol
Q.25

Solvent used in Edeleanu process is

  • furfural
  • propane
  • liquid SO2
  • phenol
Q.26

Alkylation

  • causes olefins to combine with each other.
  • causes olefins to combine with iso-paraffins.
  • converts iso-paraffin into olefin.
  • converts olefin into paraffin.
Q.27

Percentage of straight run gasoline in a typical crude oil may be around

  • 6
  • 18
  • 38
  • 52
Q.28

Most widely used solvent for dewaxing is

  • methyl-ethyl-ketone (MEK)
  • naphtha
  • petroleum ether
  • sodium plumbite
Q.29

Molecular weight of petrol may be about

  • 40-60
  • 100-130
  • 250-300
  • 350-400
Q.30

Which of the following has maximum hydrogen/carbon ratio (by weight) ?

  • Naphtha
  • Gasoline
  • Diesel
  • Fuel oil
Q.31

Pick out the wrong statement.

  • Alkylation produces a larger iso-paraf-fin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin.
  • Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts.
  • All the alkylation processes use very high temperature (> 1000°C).
  • Gasoline having an octane number of 90 can be produced by alkylation process.
Q.32

Raw Kerosene has a smoke point ofmm. After it is subjected to dearomatisation by liquid SO2 extraction (Edeleanu process), its smoke point may become __________ mm.

  • 5
  • 10
  • 25
  • 100
Q.33

In catalytic alkylation, higher iso-butane to olefin ratio gives

  • low final boiling point product
  • higher yield
  • both (a) and (b)
  • neither (a) nor (b)
Q.34

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

  • Naphtha
  • Fuel oil
  • Light diesel oil
  • Petrol
Q.35

The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol.

  • 3
  • 300
  • 3000
  • 1000
Q.36

Pour point of a petrofuel is

  • multiple of 3°F.
  • multiple of 5°F.
  • 5°C below the temperature at which oil ceases to flow.
  • none of these.
Q.37

Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.

  • 85
  • 65
  • 50
  • 98
Q.38

High aniline point of a petrofuel (say diesel) indicates that

  • it is highly aromatic in nature.
  • it is highly paraffinic in nature.
  • it has a very low diesel index.
  • its ignition quality is very poor.
Q.39

Waxes present in petroleum products

  • can be separated out by distillation.
  • are not soluble in them.
  • crystallise out at low temperature.
  • decrease their viscosity.
Q.40

Which of the following has the lowest cetane number ?

  • Aromatics
  • i-paraffins
  • Naphthene
  • Olefins
  • n-paraffins
Q.41

Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).

  • 0.03
  • 3
  • 35
  • 70
Q.42

Clay treatment is used to remove

  • salt from the crude oil.
  • colour & dissolved gases from cracked gasoline.
  • wax from lube oil.
  • none of these.
Q.43

A typical yield of kerosene in straight run distillation of crude oil may be about __________ percent.

  • 4
  • 10
  • 18
  • 26
Q.44

Which of the followingis desirable in petrol (gasoline) but undesirable in kerosene ?

  • Paraffins
  • Aromatics
  • Mercaptans
  • Naphthenic acid
Q.45

Sulphuric acid treatment of petroleum products removes the __________ materials.

  • gum forming
  • color forming
  • asphaltic
  • all (a), (b) & (c)
Q.46

Naphthenic acid is represented by

  • CnH2n+2O2
  • CnH2n-2O2
  • CnH2n+2O2 (n ≥ 6)
  • CnH2n+6O2 (n ≤ 6)
Q.47

Name the endothermic reaction out of the following:

  • Catalytic cracking.
  • Hydrocracking.
  • Dehydrogeneration of naphthene to produce aromatic.
  • Catalytic polymerisation.
Q.48

Which of the following has the maximum °API gravity of all?

  • Diesel
  • Kerosene
  • Petrol
  • Furnace oil
Q.49

Petroleum coke is used mainly .in the

  • discoloration of yellow glycerine.
  • sugar refining.
  • manufacture of carbon electrode.
  • blast furnace for reduction of iron ore.
Q.50

Road grade bitumen is produced from vacuum residue by its

  • aeration
  • pyrolysis
  • hydrogenation
  • steam reforming
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