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Petroleum Refinery Engineering — Part 2 MCQs with Explanations

Practice high-yield Chemical Engineering MCQs on Petroleum Refinery Engineering — Part 2 with worked academic solutions for FPSC, PPSC, PAEC, OGDCL.

Questions
40
Difficulty Level
Exam-Level
Target Exams
FPSC, PPSC, PAEC...
Estimated Time
48 mins
Exam-Level FPSC PPSC PAEC OGDCL
Verified for Commission Syllabus • Oct 14, 2026
40

Verified Practice Questions

Interactive test mode with detailed academic worked solutions

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Question 1 of 40
★ FPSC ★ PPSC

In case of liquid petrofuels, momentary combustion is observed at its

Question 2 of 40
★ FPSC ★ PPSC

Molecular weight of crude petroleum may be around

Question 3 of 40
★ FPSC ★ PPSC

The characterisation factor of crude petroleum oil is around

Question 4 of 40
★ FPSC ★ PPSC

With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum products

Question 5 of 40
★ FPSC ★ PPSC

Petroleum deposits are detected by the.

Question 6 of 40
★ FPSC ★ PPSC

Gum formation in stored gasoline is mainly due to the

Question 7 of 40
★ FPSC ★ PPSC

Which of the following gasolines (unleaded) has the least octane number?

Question 8 of 40
★ FPSC ★ PPSC

Which of the following categories of gasoline has the highest lead susceptibility?

Question 9 of 40
★ FPSC ★ PPSC

The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to

Question 10 of 40
★ FPSC ★ PPSC

Pyrolysis of kerosene or natural gasoline is done to produce mainly the

Question 11 of 40
★ FPSC ★ PPSC

Performance number of a liquid fuel is related to its

Question 12 of 40
★ FPSC ★ PPSC

Breathing loss on storage of gasoline occurs due to the

Question 13 of 40
★ FPSC ★ PPSC

Octane number of n-heptane is assumed to be

Question 14 of 40
★ FPSC ★ PPSC

Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is

Question 15 of 40
★ FPSC ★ PPSC

Waxes present in petroleum products

Question 16 of 40
★ FPSC ★ PPSC

Octane number (unleaded) of reformed gasoline may be upto

Question 17 of 40
★ FPSC ★ PPSC

The reservoir rock containing petroleum has

Question 18 of 40
★ FPSC ★ PPSC

Sour crude means the __________ bearing crude.

Question 19 of 40
★ FPSC ★ PPSC

Penetration test determines the __________ of the grease.

Question 20 of 40
★ FPSC ★ PPSC

Isomerisation converts the __________ tot-paraffins.

Question 21 of 40
★ FPSC ★ PPSC

Catalyst used in alkylation process is

Question 22 of 40
★ FPSC ★ PPSC

Molecular weight of petrol may be about

Question 23 of 40
★ FPSC ★ PPSC

Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is

Question 24 of 40
★ FPSC ★ PPSC

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

Question 25 of 40
★ FPSC ★ PPSC

True vapour pressure of a petroleum fraction __________ Reid vapour pressure.

Question 26 of 40
★ FPSC ★ PPSC

Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature.

Question 27 of 40
★ FPSC ★ PPSC

Octane numbers of motor gasoline used in India and America are respectively

Question 28 of 40
★ FPSC ★ PPSC

Which is the most effective catalyst used in catalytic cracking of petroleum products?

Question 29 of 40
★ FPSC ★ PPSC

Glycol added to petrol acts as a/an __________ agent.

Question 30 of 40
★ FPSC ★ PPSC

Alkylation

Question 31 of 40
★ FPSC ★ PPSC

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

Question 32 of 40
★ FPSC ★ PPSC

Which of the following is used as a solvent in deasphalting of petroleum products?

Question 33 of 40
★ FPSC ★ PPSC

Which of the following reactions is undesirable in the production of catalytically reformed gasoline?

Question 34 of 40
★ FPSC ★ PPSC

Aniline point is the

Question 35 of 40
★ FPSC ★ PPSC

Which of the following has the highest octane number?

Question 36 of 40
★ FPSC ★ PPSC

Asphalts are

Question 37 of 40
★ FPSC ★ PPSC

Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene?

Question 38 of 40
★ FPSC ★ PPSC

Clay treatment is used to remove

Question 39 of 40
★ FPSC ★ PPSC

Pick out the correct statement about catalytic polymerisation.

Question 40 of 40
★ FPSC ★ PPSC

Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.

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