Petroleum Refinery Engineering MCQs

Option A: More than 100

Option B: Round about 100

Option C: Between 50 and 100

Option D: Less than 25

Correct Answer: More than 100 ✔

Option A: Equal weight of diesel & the aniline are completely miscible

Option B: Equal weight of aniline & the test sample are completely miscible

Option C: Equal volume of aniline & the test sample are completely miscible

Option D: Aniline vaporises

Correct Answer: Equal volume of aniline & the test sample are completely miscible ✔

Option A: Low molecular weight & low boiling point compounds present in petroleum

Option B: Desirable in catalytic cracking feedstock, because they produce coke

Option C: Readily oxidisable and form carbonaceous sludge

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

Correct Answer: Readily oxidisable and form carbonaceous sludge ✔

Option A: Presence of unsaturated air

Option B: Fluctuation of ambient temperature during day and night

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: Fluctuation of ambient temperature during day and night ✔

Option A: Fixed bed

Option B: Moving bed

Option C: Fluidised bed

Option D: Non-catalytic

Correct Answer: Non-catalytic ✔

Option A: Acid

Option B: Solvent extraction

Option C: Alkali

Option D: Clay

Correct Answer: Solvent extraction ✔

Option A: Emulsification tendency

Option B: Water separation characteristics

Option C: Water content

Option D: Water absorbing capacity from atmosphere

Correct Answer: Water separation characteristics ✔

Option A: Sulphur & its compounds

Option B: Water

Option C: Organic impurities

Option D: Wax

Correct Answer: Sulphur & its compounds ✔

Option A: 35

Option B: 70

Option C: 105

Option D: 150

Correct Answer: 70 ✔

Option A: Modern theory

Option B: Carbide theory

Option C: Engler theory

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

Correct Answer: Carbide theory ✔

Option A: 60

Option B: 70

Option C: 80

Option D: 90

Correct Answer: 90 ✔

Option A: Catalytically cracked gasoline

Option B: Straight run gasoline

Option C: Catalytically reformed gasoline

Option D: Polymer gasoline

Correct Answer: Straight run gasoline ✔

Option A: Viscosity index

Option B: Viscosity

Option C: Aniline point

Option D: Flash point

Correct Answer: Viscosity index ✔

Option A: Uses naphtha as feedstock

Option B: Does not much affect the molecular weight of the feed

Option C: Improves the quality & yield of gasoline

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

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

Option A: Naphtha or straight run gasoline

Option B: Reduced crude

Option C: Vacuum gas oil

Option D: Atmospheric gas oil

Correct Answer: Naphtha or straight run gasoline ✔

Option A: Aromatics

Option B: Paraffins

Option C: Olefins

Option D: Naphthenes

Correct Answer: Naphthenes ✔

Option A: Paraffinic

Option B: Naphthenic

Option C: Intermediate

Option D: Mixed

Correct Answer: Naphthenic ✔

Option A: 40-60

Option B: 100-130

Option C: 250-300

Option D: 350-400

Correct Answer: 100-130 ✔

Option A: 4

Option B: 10

Option C: 18

Option D: 26

Correct Answer: 10 ✔

Option A: Butane

Option B: Propane

Option C: Natural gas

Option D: Gasoline separated from wet natural gas by compression

Correct Answer: Butane ✔

Option A: 10 and 120

Option B: 1 and 200

Option C: 50 and 250

Option D: 10 and 300

Correct Answer: 1 and 200 ✔

Option A: Viscosity index

Option B: Volatility

Option C: Pour point

Option D: None of these

Correct Answer: Viscosity index ✔

Option A: Naphthene

Option B: Olefin

Option C: Paraffin

Option D: Aromatics

Correct Answer: Aromatics ✔

Option A: Improve the octane number

Option B: Act as an antioxidant

Option C: Reduce its viscosity

Option D: Increase its pour point

Correct Answer: Act as an antioxidant ✔

Option A: Higher yield of straight run gasoline

Option B: Higher octane number gasoline

Option C: Lower viscosity index lube oil

Option D: Poorer yield of lube oil

Correct Answer: Higher yield of straight run gasoline ✔

Option A: Nature of boiling point diagram of the system

Option B: Amount of low boiling fraction present

Option C: Explosion hazards

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

Correct Answer: Nature of boiling point diagram of the system ✔

Option A: 1

Option B: 50

Option C: 5000

Option D: 10000

Correct Answer: 50 ✔

Option A: Low porosity

Option B: High permeability

Option C: High porosity

Option D: Both B. and C.

Correct Answer: D. Both B. and C. ✔

Option A: Amyl nitrate

Option B: Alcohols

Option C: Mercaptans

Option D: Pyridine

Correct Answer: Alcohols ✔

Option A: Produces i-octane from cracked gases containing i-butane and butene

Option B: Causes olefins to combine with each other

Option C: Causes aromatics to combine with each other

Option D: Is aimed at producing lubricating oil

Correct Answer: Causes olefins to combine with each other ✔

Option A: Nitrogen compounds

Option B: Organometallic compounds

Option C: Sulphur compounds

Option D: Oxygen compounds

Correct Answer: Sulphur compounds ✔

Option A: Diesel

Option B: LPG

Option C: Naphtha

Option D: Gasoline

Correct Answer: Naphtha ✔

Option A: Decolorizes & stabilises cracked gasoline

Option B: Desulphurise straight run gasoline & kerosene

Option C: Adsorb arsenic from feedstock to catalytic reforming

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

Correct Answer: D. All A., B. & C. ✔

Option A: Dehydrogenation of naphthenes

Option B: Hydrogenation of naphthenes

Option C: Hydrocracking of paraffins

Option D: Saturation of olefins

Correct Answer: Dehydrogenation of naphthenes ✔

Option A: 6

Option B: 18

Option C: 38

Option D: 52

Correct Answer: 52 ✔

Option A: 85

Option B: 65

Option C: 50

Option D: 98

Correct Answer: 85 ✔

Option A: Residual crude

Option B: Residuum

Option C: Reduced crude

Option D: Petrolatum

Correct Answer: Residuum ✔

Option A: Can be separated out by distillation

Option B: Are not soluble in them

Option C: Crystallise out at low temperature

Option D: Decrease their viscosity

Correct Answer: Crystallise out at low temperature ✔

Option A: Olefins and aromatics

Option B: Lighter paraffins

Option C: Stabilised gasoline

Option D: Diesel

Correct Answer: Olefins and aromatics ✔

Option A: Cloud point

Option B: Pour point

Option C: Colour

Option D: Freezing point

Correct Answer: Freezing point ✔

Option A: Increase the yield of light distillates

Option B: Suppress coke formation

Option C: Enhance the octane number of gasoline

Option D: Reduce gum content in gasoline

Correct Answer: Suppress coke formation ✔

Option A: Road tankers

Option B: Rail tankers

Option C: Underground pipelines

Option D: None of these

Correct Answer: Underground pipelines ✔

Option A: Pensky-Martens (closed cup type)

Option B: Abel

Option C: Cleveland (open cup type)

Option D: None of these

Correct Answer: Cleveland (open cup type) ✔

Option A: 25

Option B: 35

Option C: 45

Option D: 65

Correct Answer: 45 ✔

Option A: Lubricating oil > diesel > petrol > LPG

Option B: Lubricating oil > petrol > diesel > LPG

Option C: Petrol > lubricating oil > diesel > LPG

Option D: Petrol > diesel > LPG > lubricating oil

Correct Answer: Lubricating oil > diesel > petrol > LPG ✔

Option A: Delayed

Option B: Flexi

Option C: Fluid

Option D: Contact

Correct Answer: Delayed ✔

Option A: More than

Option B: Less than

Option C: Same as

Option D: Either more or less; depends on the room temperature

Correct Answer: Same as ✔

Option A: 79

Option B: 87

Option C: 97

Option D: > 100

Correct Answer: > 100 ✔

Option A: Lamp method and bomb method

Option B: Bomb method and lamp method

Option C: Bomb method and quartz tube method

Option D: Quartz tube method and lamp method

Correct Answer: Bomb method and lamp method ✔

Option A: Determination of characterisation factor

Option B: Evaluation of oil stocks

Option C: Determination of true vapour pressure

Option D: None of these

Correct Answer: None of these ✔

Option A: Colour comparator

Option B: Saybolt chromometer

Option C: Cleveland apparatus

Option D: None of these

Correct Answer: Colour comparator ✔

Option A: Black

Option B: White

Option C: Red

Option D: Yellow

Correct Answer: White ✔

Option A: Di-olefin

Option B: Naphthene

Option C: Aromatic

Option D: Olefin

Correct Answer: Di-olefin ✔

Option A: Blending component for kerosene

Option B: Blending component for petrol

Option C: Feedstock for fluid catalytic cracking unit

Option D: None of these

Correct Answer: Feedstock for fluid catalytic cracking unit ✔

Option A: Bubble-cap

Option B: Packed bed

Option C: Fluidised bed

Option D: Perforated plate

Correct Answer: Bubble-cap ✔

Option A: Electric immersion

Option B: Pipestill

Option C: Steam coil

Option D: None of these

Correct Answer: Pipestill ✔

Option A: Anti-knocking

Option B: Anti-icing

Option C: Anti-gum forming

Option D: Dewaxing

Correct Answer: Anti-icing ✔

Option A: 0.1

Option B: 1

Option C: 2.5

Option D: 3.5

Correct Answer: 1 ✔

Option A: Impart colour to it, for easy identification

Option B: Minimise the gum formation

Option C: Prevent icing of the carburettor

Option D: Prevent the lead build up in engines

Correct Answer: Minimise the gum formation ✔

Option A: Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins →

Option B: Smoking tendency of paraffins increases with decrease in its molecular weight

Option C: Smoking tendency of naphthenes decreases with its increasing molecular weight & also on

Option D: Smoking tendency of aromatics decreases with increase in its molecular weight

Correct Answer: Smoking tendency of paraffins increases with decrease in its molecular weight ✔

Option A: R-COOH

Option B: R-S-H

Option C: R-S-R

Option D: R-S-R’

Correct Answer: R-S-H ✔

Option A: 0

Option B: 100

Option C: 50

Option D: ∞

Correct Answer: 0 ✔

Option A: Aromatics

Option B: Mercaptans

Option C: Paraffins

Option D: Naphthenic acid

Correct Answer: Aromatics ✔

Option A: Abel apparatus

Option B: Pensky-Martens apparatus

Option C: Saybolt chromometer

Option D: None of these

Correct Answer: Abel apparatus ✔

Option A: Sulphur

Option B: Nitrogen

Option C: Oxygen

Option D: None of these

Correct Answer: Oxygen ✔

Option A: Liquid lighter than water

Option B: Liquid heavier than water

Option C: Gas lighter than air

Option D: Gas heavier than air

Correct Answer: Gas heavier than air ✔

Option A: Alkylation of unsaturated

Option B: Presence of sulphur

Option C: Oxidation & polymerisation of unsaturated

Option D: Higher aromatic content

Correct Answer: Presence of sulphur ✔

Option A: 0-5

Option B: 20-25

Option C: 60-75

Option D: 100-120

Correct Answer: 20-25 ✔

Option A: Elimination of solvent drying facility

Option B: Higher nitration temperature

Option C: Lower solvent dilution ratio

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

Correct Answer: D. All A., B. & C. ✔

Option A: Diesel

Option B: Kerosene

Option C: Petrol

Option D: Furnace oil

Correct Answer: Furnace oil ✔

Option A: 50

Option B: 70

Option C: 90

Option D: 140

Correct Answer: 90 ✔

Option A: Butene

Option B: Butadiene

Option C: Cyclohexane

Option D: Acetylene

Correct Answer: Cyclohexane ✔

Option A: Olefins

Option B: Mercaptans

Option C: Naphthenes

Option D: Cycloparaffins

Correct Answer: Mercaptans ✔

Option A: High pressure & temperature

Option B: Low pressure & temperature

Option C: High pressure and low temperature

Option D: High temperature and low pressure

Correct Answer: High pressure & temperature ✔

Option A: Cracking

Option B: Polymerisation

Option C: Reforming

Option D: Isomerisation

Correct Answer: Reforming ✔

Option A: Steam reforming

Option B: Distillation

Option C: Desulphurisation

Option D: None of these

Correct Answer: Distillation ✔

Option A: Molecular weight

Option B: Aromatics content

Option C: Both A. & B.

Option D: Neither ‘a’ nor ‘b’

Correct Answer: C. Both A. & B. ✔

Option A: 45

Option B: 55

Option C: 70

Option D: 90

Correct Answer: 70 ✔

Option A: 50

Option B: 250

Option C: 1500

Option D: 5000

Correct Answer: 50 ✔

Option A: 3

Option B: 11

Option C: 22

Option D: 28

Correct Answer: 11 ✔

Option A: Is less than

Option B: Is more than

Option C: Is same as

Option D: May be either more or less than

Correct Answer: May be either more or less than ✔

Option A: 8

Option B: 18

Option C: 28

Option D: 35

Correct Answer: 8 ✔

Option A: Atmospheric

Option B: 10 atm

Option C: Vacuum

Option D: 3 atm

Correct Answer: Atmospheric ✔

Option A: Phosphoric acid on kieselguhr

Option B: Aluminium chloride

Option C: Nickel

Option D: Vanadium pentoxide

Correct Answer: Phosphoric acid on kieselguhr ✔

Option A: Polymer

Option B: Unleaded

Option C: Casing head

Option D: Straight run

Correct Answer: Unleaded ✔

Option A: Magnesium

Option B: Potassium

Option C: Calcium

Option D: Sodium

Correct Answer: Magnesium ✔

Option A: Salt from the crude oil

Option B: Colour & dissolved gases from cracked gasoline

Option C: Wax from lube oil

Option D: None of these

Correct Answer: Wax from lube oil ✔

Option A: Paraffins

Option B: Olefins

Option C: Naphthenes

Option D: Aromatics

Correct Answer: Paraffins ✔

Option A: Specific gravity

Option B: Melting point

Option C: Viscosity

Option D: Penetration number

Correct Answer: Viscosity ✔

Option A: Low flash point

Option B: High breathing loss

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: D. Neither A. nor B. ✔

Option A: 1

Option B: 4.08

Option C: 0.408

Option D: 40.8

Correct Answer: 4.08 ✔

Option A: Diesel

Option B: Gasoline

Option C: Naphtha

Option D: Atmospheric residue

Correct Answer: Atmospheric residue ✔

Option A: Low smoke point

Option B: High smoke point

Option C: High aromatics content

Option D: Low paraffins content

Correct Answer: High smoke point ✔

Option A: Sulphuric acid

Option B: Nickel

Option C: Silica gel

Option D: Alumina

Correct Answer: Sulphuric acid ✔

Option A: An exothermic reaction

Option B: An endothermic reaction

Option C: Favoured at very low temperature

Option D: None of these

Correct Answer: An endothermic reaction ✔

Option A: Less than 90% promotes polymerisation

Option B: More than 98% promotes cracking

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. and B. ✔

Option A: pH value

Option B: Water percentage

Option C: Temperature

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

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

Option A: 100

Option B: 0

Option C: 70

Option D: ∞

Correct Answer: 0 ✔

Option A: PCM

Option B: Tar

Option C: Light diesel oil

Option D: Low viscosity furnace oil

Correct Answer: Light diesel oil ✔

Option A: H2SO4

Option B: H3PO4

Option C: HF

Option D: AlCl3

Correct Answer: AlCl3 ✔