Home/Important MCQs/Petroleum Refinery Engineering/MCQs

Petroleum Refinery Engineering MCQs

Free 316+ Petroleum Refinery Engineering MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Practise below with answers and explanations.

316 MCQs available← Back to Petroleum Refinery Engineering

All Subjects

Categories are collapsed by default. Use search to jump.

Search categories

PAST PAPERS
General Knowledge MCQs
•Biology Mcqs
•Everyday Science Mcqs
Chemistry Mcqs
Physics Mcqs
Statistics Mcqs
Agriculture MCQs
English Mcqs
Computer Mcqs
Medical Mcqs
Pedagogy Mcqs
Physical Education
World Current Affairs MCQs
URDU GENERAL KNOWLEDGE
Psychology Mcqs
Political Science Mcqs
Software Engineering Mcqs
Mathematics Mcqs
Islamic Studies Mcqs
•Management Mcqs
BOTANY MCQS
•Business Maths MCQs
CHEMICAL ENGINEERING
Civil Engineering Mcqs
Electrical Engineering Mcqs
Election Officer Mcqs
Pak Study Mcqs
Pakistan Current Affairs MCQs
•Computer Science

316 questions in this list. Select an option to practice, or open a question for the full page with explanation.

About this subject

Petroleum Refinery Engineering

Show Answers

Correct options are highlighted when revealed.

1.Identify the incorrect statement regarding petroleum products:

A lighter color in petroleum products signifies a lower viscosity.The color of petroleum products reflects how refined they are.Lighter petroleum fractions generally have a lighter hue compared to heavier residual oils.Oil fluorescence is useful for detecting adulteration.

2.Identify the incorrect statement from the following:

Visbreaking uses a higher temperature compared to thermal cracking.Pyrolysis is considered a gentle form of thermal cracking.Petrol made through catalytic methods has greater lead sensitivity than petrol from thermal cracking.Thermal cracking operates at higher pressures and temperatures than catalytic cracking.

3.Identify the incorrect statement from the following:

Petroleum products with greater specific gravity have a higher carbon to hydrogen ratio.Aromatic hydrocarbons exhibit a lower specific gravity compared to their equivalent paraffin compounds.Hydrocarbons with low specific gravity, such as paraffins, contain the highest thermal energy per unit volume.Hydrocarbons with high specific gravity, like aromatics, have the greatest thermal energy per unit weight.

4.Which of the following represents an additive characteristic of lubricating oil?

°API gravityDensityThickness (Viscosity)Ignition temperature

5.Identify the incorrect statement regarding the alkylation process:

Alkylation forms larger iso-paraffins with higher octane ratings by reacting olefins with smaller iso-paraffins.Catalysts such as HF, AlCl3, and H2SO4 are employed in catalytic alkylation methods.Every alkylation process operates at extremely high temperatures above 1000°C.Alkylation can produce gasoline with an octane number around 90.

6.Which of the following statements about catalytic cracking is accurate?

Raising the reactor pressure causes a reduction in the gasoline's octane rating.Increasing the reactor temperature leads to a lower gasoline output at a fixed conversion rate.The conversion percentage rises when the catalyst-to-oil ratio is increased.All statements A, B, and C are correct.None of the above.

7.Which of the following statements about thermal cracking is accurate?

Small variations in operating temperature do not affect the extent of cracking.Longer residence times lead to a reduction in cracking intensity.Lower pressure conditions produce a higher quantity of light hydrocarbons.A more extensive cracking process results in gasoline with a reduced octane rating.

8.Identify the incorrect statement from the following:

Iso-paraffins break down more quickly than n-paraffins.Catalytic cracking releases heat, whereas catalyst regeneration absorbs heat.The decomposition rate of olefins during catalytic cracking is somewhat slower compared to thermal cracking.None of the above statements are incorrect.

9.Identify the incorrect statement from the following options:

The Pensky-Martens apparatus is utilized to measure flash points exceeding 50°C.Paraffinic crude oils typically have a characterization factor greater than 12.The Abel apparatus is designed to determine flash points below 50°C.Oils that exhibit significant viscosity changes with temperature variations possess a high viscosity index.

10.Identify the incorrect statement from the following:

Aromatic compounds possess greater specific gravity compared to paraffinic compounds.The gross calorific value (GCV) of petroleum fuels can be calculated using the formula (12400 – 2100 ρ²), where ρ represents the specific gravity at 15.5°C.Petroleum fuels with higher density have greater gross calorific value by volume (Kcal/litre) but lower gross calorific value by weight (Kcal/kg).An increase in specific gravity of petroleum fuels indicates a higher carbon-to-hydrogen ratio.

11.Identify the correct statement from the options below:

The octane rating of iso-octane is zero.As the carbon chain lengthens in paraffins, their octane number rises.Paraffins with branched chains possess a greater octane number than their straight-chain counterparts with the same carbon count.Aromatic compounds have a lower octane rating compared to naphthenes with an equal number of carbon atoms.

12.Which of the following statements is true regarding coking behavior?

The likelihood of coking rises as molecular weight increases.The chance of coking reduces when molecular weight goes up.Elevated pressure promotes the formation of coke.Coking is a reaction that releases heat.

13.Which of the following statements is accurate?

Paraffins possess a greater octane rating than their isoparaffin counterparts.Paraffins exhibit a lower smoke point compared to aromatic compounds.The char value test is used to assess kerosene's effectiveness as both a fuel and a light source.Aviation fuel is required to have an exceptionally high cloud point.

14.Identify the incorrect statement regarding viscosity index and types of lubricating oils:

Multigrade lubricating oils possess a high viscosity index.Paraffinic oils are characterized by a very high viscosity index.Naphthenic oils exhibit a low viscosity index.A high viscosity index indicates a significant variation in viscosity with temperature changes.

Petroleum Refinery Engineering MCQs

About this subject

1.Identify the incorrect statement regarding petroleum products:

2.Identify the incorrect statement from the following:

3.Identify the incorrect statement from the following:

4.Which of the following represents an additive characteristic of lubricating oil?

5.Identify the incorrect statement regarding the alkylation process:

6.Which of the following statements about catalytic cracking is accurate?

7.Which of the following statements about thermal cracking is accurate?

8.Identify the incorrect statement from the following:

9.Identify the incorrect statement from the following options:

10.Identify the incorrect statement from the following:

11.Identify the correct statement from the options below:

12.Which of the following statements is true regarding coking behavior?

13.Which of the following statements is accurate?

14.Identify the incorrect statement regarding viscosity index and types of lubricating oils:

15.Why are chemical additives primarily used in the treatment of waxy crude oils?

16.In which of the following industries is petroleum coke primarily utilized?

17.Which type of pump is commonly used to transport crude oil?

18.Which catalyst is employed in the isomerization process?

19.Among hydrocarbons with an equal number of carbon atoms, which type produces the least amount of smoke when burned?

20.Which of the following tests is considered least important when evaluating gasoline?

More on PakQuizHub