INDIABIX-Petroluem Refinery Engineering

Question 1

Which of the following tests is not done for transformer oil ?
Flash point and acid value.
Aniline point.
Dielectric strength.
Copper strip corrosion test.

Answer 1

Aniline point

Question 2

Which is the most undesirable component in kerosene ?
Aromatics
i-paraffins
n-paraffins
Naphthenes

Answer 2

Aromatics

Question 3

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.

Answer 3

@Smoking tendency of paraffins increases with decrease in its molecular weight.

Question 4

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.

Answer 4

propane & phenol-cresol mixture

Question 5

Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API) ?
Diesel
Gasoline
Atmospheric gas oil
Vacuum gas oil

Answer 5

Gasoline

Question 6

For gasoline, the flash point (<50°C) is determined by the
Abel apparatus.
Pensky-Marten’s apparatus.
Saybolt chromometer.
none of these.

Answer 6

Abel apparatus

Question 7

Flash point of atmospheric distillation residue is determined by __________ apparates.
@Pensky-Martens (closed cup type).
@Abel.
@Cleveland (open cup type)
@none of these.

Answer 7

Cleveland (open cup type)

Question 8

Pour point and freezing point is equal for
@petrol
@diesel
@water
@crude petroleum

Answer 8

water

Question 9

Smoke 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.
@n-paraffins
@olefins
@aromatics
@none of these

Answer 9

aromatics

Question 10

__________ is not an important refinery process for upgrading the quality of lubricating oil.
@Deoiling
@Solvent refining
@Clay treatment
@Hydrotreatment

Answer 10

Deoiling

Question 11

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).

Answer 11

Both (a) and (b).

Question 12

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)

Answer 12

All (a), (b) and (c)

Question 13

Casing head gasoline is the liquid
@butane.
@propane.
@natural gas.
@gasoline separated from wet natural gas by compression.

Answer 13

gasoline separated from wet natural gas by compression.

Question 14

Most commonly used crude heater before the fractionation tower in a refinery is the __________ heater.
@electric immersion
@pipestill
@steam coil
@none of these

Answer 14

pipestill

Question 15

Viscosity index of a lubricating oil
@is the measure of its flash point.
@is the measure of variation of viscosity with temperature.
@should be low.
@none of these.

Answer 15

is the measure of variation of viscosity with temperature

Question 16

Visbreaking process is used mainly for making
@high cetane diesel
@high octane gasoline
@fuel oil
@smoke free kerosene

Answer 16

fuel oil