Petroleum Refinery Engineering MCQs

Option A: Causes olefins to combine with each other

Option B: Causes olefins to combine with iso-paraffins

Option C: Converts iso-paraffin into olefin

Option D: Converts olefin into paraffin

Correct Answer: Causes olefins to combine with iso-paraffins ✔

Option A: Smoke point

Option B: Aniline point

Option C: Luminosity number

Option D: Aromatic content

Correct Answer: Luminosity number ✔

Option A: 1.5

Option B: 3

Option C: 6

Option D: 12

Correct Answer: 3 ✔

Option A: Paraffinic

Option B: Naphthenic

Option C: Asphaltic

Option D: Mixed base

Correct Answer: Asphaltic ✔

Option A: Waxes

Option B: Mercaptans

Option C: Asphalt

Option D: Diolefins

Correct Answer: Mercaptans ✔

Option A: Diesel

Option B: Kerosene

Option C: Petrol

Option D: Furnace oil

Correct Answer: Petrol ✔

Option A: Is highly aromatic

Option B: Has a large ignition delay

Option C: Is highly paraffinic

Option D: Has a low diesel index

Correct Answer: Is highly paraffinic ✔

Option A: 10

Option B: 45

Option C: 100

Option D: 150

Correct Answer: 45 ✔

Option A: Naphtha

Option B: Fuel oil

Option C: Light diesel oil

Option D: Petrol

Correct Answer: Fuel oil ✔

Option A: Is the measure of its flash point

Option B: Is the measure of variation of viscosity with temperature

Option C: Should be low

Option D: None of these

Correct Answer: Is the measure of variation of viscosity with temperature ✔

Option A: Pour point

Option B: Viscosity

Option C: Pressure drop on pumping

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: Naphthenic

Option B: Asphalt

Option C: Paraffin

Option D: Mixed

Correct Answer: Mixed ✔

Option A: Alkylation

Option B: Polymerisation

Option C: Isomerisation

Option D: None of these

Correct Answer: Isomerisation ✔

Option A: Very little oil

Option B: No natural gas

Option C: Only natural gas

Option D: All A., B. and C.

Correct Answer: Only natural gas ✔

Option A: Methanol in Unisol process

Option B: Naphthenic acid in Mercapsol process

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. and B. ✔

Option A: Furfural

Option B: Phenol

Option C: Propane

Option D: Hexane

Correct Answer: Propane ✔

Option A: 30

Option B: 45

Option C: 75

Option D: 95

Correct Answer: 45 ✔

Option A: Case of starting

Option B: Rate of acceleration

Option C: Vapour locking tendency

Option D: All A., B. and C.

Correct Answer: Rate of acceleration ✔

Option A: Naphtha

Option B: Lubricating oils

Option C: Wax

Option D: Cracking feedstock

Correct Answer: Lubricating oils ✔

Option A: Aromatics

Option B: i-paraffins

Option C: Naphthenes

Option D: Olefins

Correct Answer: Aromatics ✔

Option A: Fluid catalytic cracking

Option B: Visbreaking

Option C: Propane deasphalting

Option D: None of these

Correct Answer: Fluid catalytic cracking ✔

Option A: Platinum on alumina

Option B: Nickel

Option C: Iron

Option D: Aluminium chloride

Correct Answer: Platinum on alumina ✔

Option A: Stiffness

Option B: Lubricating properties (e.g. oilness)

Option C: Service temperature

Option D: Variation in viscosity with temperature

Correct Answer: Stiffness ✔

Option A: Flash point

Option B: Preheating temperature corresponding to viscosity of 25 centistokes

Option C: Flame temperature

Option D: Fire point

Correct Answer: Flash point ✔

Option A: Deoiling

Option B: Solvent refining

Option C: Clay treatment

Option D: Hydro-treatment

Correct Answer: Deoiling ✔

Option A: Is optically active

Option B: Constitutes mainly of olefins

Option C: Does not contain asphalt

Option D: Does not contain aromatics

Correct Answer: Is optically active ✔

Option A: Diesel

Option B: Petrol

Option C: Kerosene

Option D: Fuel oil

Correct Answer: Fuel oil ✔

Option A: Octane number

Option B: Lead susceptibility

Option C: Gum forming tendency & thoroughness of refining

Option D: None of these

Correct Answer: Gum forming tendency & thoroughness of refining ✔

Option A: Catalytic cracking

Option B: Catalytic reforming

Option C: Hydrotreating

Option D: Alkylation

Correct Answer: Catalytic reforming ✔

Option A: Paraffins

Option B: Olefins

Option C: Naphthenes

Option D: None of these

Correct Answer: Paraffins ✔

Option A: 2

Option B: 6

Option C: 12

Option D: 18

Correct Answer: 6 ✔

Option A: Is light and better

Option B: Gives more distillates

Option C: Gives less tar

Option D: All A., B. and C.

Correct Answer: Gives more distillates ✔

Option A: Complete miscibility with oil

Option B: High solubility of wax in the solvent

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. and B. ✔

Option A: Potassium isobutyrate

Option B: Sodium plumbite

Option C: Methanol

Option D: Phenol

Correct Answer: Potassium isobutyrate ✔

Option A: 4

Option B: 3

Option C: 2

Option D: 1

Correct Answer: 4 ✔

Option A: Flash point and acid value

Option B: Aniline point

Option C: Dielectric strength

Option D: Copper strip corrosion test

Correct Answer: Aniline point ✔

Option A: Same as petroleum ether

Option B: Petroleum coke

Option C: A mixture of microcrystalline wax in viscous hydrocarbon liquids

Option D: None of these

Correct Answer: A mixture of microcrystalline wax in viscous hydrocarbon liquids ✔

Option A: Smoke point

Option B: Paraffins

Option C: Aromatics

Option D: Naphthenes

Correct Answer: Paraffins ✔

Option A: Methyl-ethyl-ketone (MEK)

Option B: Naphtha

Option C: Petroleum ether

Option D: Sodium plumbite

Correct Answer: Methyl-ethyl-ketone (MEK) ✔

Option A: Thiophenes

Option B: Mercaptans

Option C: Sulphones

Option D: Pyrroles

Correct Answer: Pyrroles ✔

Option A: Multiple of 3°F

Option B: Multiple of 5°F

Option C: 5°C below the temperature at which oil ceases to flow

Option D: None of these

Correct Answer: 5°C below the temperature at which oil ceases to flow ✔

Option A: One fourth

Option B: One third

Option C: Half

Option D: One eighth

Correct Answer: Half ✔

Option A: Increases coke formation

Option B: Increases the rate of reaction

Option C: Produces high octane number gasoline

Option D: None of these

Correct Answer: None of these ✔

Option A: Paraffinic

Option B: Naphthenic

Option C: Mixed

Option D: Aromatic

Correct Answer: Naphthenic ✔

Option A: Propane

Option B: Methyl ethyl ketone

Option C: Doctor’s solution

Option D: Methanol amine

Correct Answer: Methyl ethyl ketone ✔

Option A: Time after which smoking starts on burning

Option B: Temperature at which smoking starts

Option C: Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp

Option D: None of these

Correct Answer: Temperature at which smoking starts ✔

Option A: Naphtha

Option B: Kerosene

Option C: LSHS

Option D: Furnace oil

Correct Answer: Naphtha ✔

Option A: Sulphur

Option B: Nitrogen

Option C: Oxygen

Option D: None of these

Correct Answer: Sulphur ✔

Option A: Obviate catalyst poisoning

Option B: Maintain the reaction temperature

Option C: Sustain the reactor pressure

Option D: Hydrogenate the feed stock

Correct Answer: Sustain the reactor pressure ✔

Option A: Oleophilic

Option B: Oleophobic

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: Oleophobic ✔

Option A: Decrease in paraffin content

Option B: Increase in thermal energy per unit weight

Option C: Increase in aromatic content

Option D: Higher H/C ratio

Correct Answer: Decrease in paraffin content ✔

Option A: Lubricating oils

Option B: LPG

Option C: Diesel

Option D: Kerosene

Correct Answer: Kerosene ✔

Option A: Lubricating oil

Option B: Diesel

Option C: Kerosene

Option D: Petrol

Correct Answer: Petrol ✔

Option A: Carnot

Option B: CFR (Co-operative fuel research)

Option C: Stirling

Option D: Diesel

Correct Answer: CFR (Co-operative fuel research) ✔

Option A: Hexane

Option B: Furfural

Option C: Benzol and ethylene dichloride

Option D: Methyl ethyl ketone (MEK)

Correct Answer: Benzol and ethylene dichloride ✔

Option A: Asphalt

Option B: Sulphur compounds

Option C: Wax

Option D: Nitrogen compounds

Correct Answer: Sulphur compounds ✔

Option A: Sulphur

Option B: Nitrogen

Option C: Oxygen

Option D: None of these

Correct Answer: Nitrogen ✔

Option A: Decreases

Option B: Increases

Option C: Remains unchanged

Option D: Decreases linearly

Correct Answer: Increases ✔

Option A: Increase its smoke point

Option B: Reduce gum formation

Option C: Reduce the pour point

Option D: Increase its octane number

Correct Answer: Increase its smoke point ✔

Option A: Straight run gasoline

Option B: Platinum reformed gasoline

Option C: Catalytical cracked gasoline

Option D: Polymer gasoline

Correct Answer: Straight run gasoline ✔

Option A: 3

Option B: 300

Option C: 3000

Option D: 1000

Correct Answer: 3 ✔

Option A: 0.1 to 0.5

Option B: 1.5 to 4.5

Option C: 7.5 to 12.5

Option D: 15-20

Correct Answer: 1.5 to 4.5 ✔

Option A: Catalytic naphtha – coking naphtha – virgin naphtha

Option B: Coking naphtha – virgin naphtha – catalytic naphtha

Option C: Virgin naphtha – catalytic naphtha – coking naphtha

Option D: Virgin naphtha – coking naphtha – catalytic naphtha

Correct Answer: B. Coking naphtha – virgin naphtha – catalytic naphtha ✔

Option A: Heating

Option B: Cooling

Option C: Solvent extraction

Option D: Both B. & C.

Correct Answer: D. Both B. & C. ✔

Option A: Stabilisation

Option B: Visbreaking

Option C: Cracking

Option D: Reforming

Correct Answer: Cracking ✔

Option A: Saturated hydrocarbons

Option B: Unsaturated cyclic compounds (hydrocarbons)

Option C: Present in substantially good quantity in crude petroleum

Option D: None of these

Correct Answer: None of these ✔

Option A: 80

Option B: 87

Option C: 92

Option D: 97

Correct Answer: 97 ✔

Option A: Naphtha

Option B: Cracked gases rich in C2 & C4 olefins

Option C: Low boiling aromatics

Option D: None of these

Correct Answer: Cracked gases rich in C2 & C4 olefins ✔

Option A: Tetraethyl lead

Option B: Tetramethyllead

Option C: Ethyl nitrate or acetone

Option D: None of these

Correct Answer: Tetraethyl lead ✔

Option A: Gives higher yield of petrol

Option B: Lower octane number of petrol

Option C: Higher sulphur content in the product

Option D: Higher gum forming material in petrol

Correct Answer: Gives higher yield of petrol ✔

Option A: Dubbs process

Option B: T.C.C. moving bed process

Option C: Fluidised bed catalytic cracking process

Option D: Houdry’s fixed bed process

Correct Answer: Fluidised bed catalytic cracking process ✔

Option A: Diesel increases its cetane number

Option B: Kerosene increases its smoke point

Option C: Petrol increases its octane number

Option D: All A., B. and C.

Correct Answer: Petrol increases its octane number ✔

Option A: Gasoline

Option B: Lube oil

Option C: Petrolatum

Option D: Coke

Correct Answer: Gasoline ✔

Option A: Increase its smoke point

Option B: Improve its oxidation stability

Option C: Decrease the breathing loss

Option D: None of these

Correct Answer: Improve its oxidation stability ✔

Option A: Uses natural gas as feed

Option B: Is carried out at atmospheric pressure

Option C: Produces fuel oil of lower viscosity

Option D: Produces gasoline only

Correct Answer: Produces fuel oil of lower viscosity ✔

Option A: Pensky Martens apparatus

Option B: Ramsbottom apparatus

Option C: Saybolt viscometer

Option D: Conradson apparatus

Correct Answer: Pensky Martens apparatus ✔

Option A: H2SO4

Option B: H3PO4

Option C: Both A. and B.

Option D: AlCl3

Correct Answer: C. Both A. and B. ✔

Option A: 5

Option B: 15

Option C: 25

Option D: 35

Correct Answer: 5 ✔

Option A: 5

Option B: 15

Option C: 40

Option D: 60

Correct Answer: 40 ✔

Option A: Naphtha

Option B: Petrol

Option C: Kerosene

Option D: Heavy fuel oil

Correct Answer: Heavy fuel oil ✔

Option A: Furfural

Option B: Methyl ethyl ketone (MEK)

Option C: Propane

Option D: Both B. & C.

Correct Answer: Propane ✔

Option A: CnH2n + 2

Option B: CnH2n-6 (where, n ≥ 6)

Option C: CnHn-4

Option D: Same as that for olefins i.e. CnH2n

Correct Answer: CnH2n-6 (where, n ≥ 6) ✔

Option A: Methyl alcohol

Option B: Ethyl alcohol

Option C: Methane

Option D: Ethane

Correct Answer: Methyl alcohol ✔

Option A: Smoke point

Option B: Paraffins

Option C: Aromatics

Option D: Naphthenes

Correct Answer: Paraffins ✔

Option A: 1 to 5

Option B: 30 to 80

Option C: 250 to 350

Option D: 450 to 500

Correct Answer: 30 to 80 ✔

Option A: Viscosity

Option B: Viscosity index

Option C: Smoke point

Option D: Pour point

Correct Answer: Smoke point ✔

Option A: Moving bed

Option B: Fluidised bed

Option C: Non-regenerative & fixed bed

Option D: Regenerative

Correct Answer: Non-regenerative & fixed bed ✔

Option A: Increases

Option B: Decreases

Option C: Remain same

Option D: Is unpredictable

Correct Answer: Increases ✔

Option A: Hydroforming

Option B: Thermofor catalytic reforming

Option C: Platforming

Option D: Hyperforming

Correct Answer: Platforming ✔

Option A: High pour point and low smoke point

Option B: Low viscosity index

Option C: High self-ignition temperature

Option D: All A., B. and C.

Correct Answer: Low viscosity index ✔

Option A: Paraffins

Option B: Aromatics

Option C: Mercaptans

Option D: Naphthenic acid

Correct Answer: Mercaptans ✔

Option A: pH of the soil

Option B: Bacterial action

Option C: Heat

Option D: Pressure

Correct Answer: pH of the soil ✔

Option A: 5

Option B: 25

Option C: 50

Option D: 100

Correct Answer: 5 ✔

Option A: Smoke point

Option B: Octane number

Option C: Cetane number

Option D: Viscosity

Correct Answer: Octane number ✔

Option A: Composition

Option B: Specific gravity

Option C: Optical properties

Option D: Viscosity

Correct Answer: Specific gravity ✔

Option A: Aeration

Option B: Pyrolysis

Option C: Hydrogenation

Option D: Steam reforming

Correct Answer: Steam reforming ✔

Option A: Boiling points

Option B: Molecular weight

Option C: C/H ratio

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: α-methyl naphthalene

Option B: 2-2-4 tri methyl pentane

Option C: 1, 3 butadiene

Option D: Tetra methyl ethylene

Correct Answer: 2-2-4 tri methyl pentane ✔

Option A: Ignition delay

Option B: Smoke point

Option C: Viscosity

Option D: Oxidation stability

Correct Answer: Ignition delay ✔

Option A: 2

Option B: 5

Option C: 10

Option D: 25

Correct Answer: 2 ✔