Petroleum Refinery Engineering MCQs

Question 1

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

Accepted Answer

Flash point

Answer

Preheating temperature corresponding to viscosity of 25 centistokes

Answer

Flame temperature

Answer

Fire point

Question 2

Solvent used for dewaxing of petroleum products are

Accepted Answer

Propane

Answer

Furfural

Answer

Methyl ethyl ketone (MEK)

Answer

Both B & C

Question 3

Clay treatment of petroleum products

Accepted Answer

All of the above

Answer

Decolorises & stabilises cracked gasoline

Answer

Desulphurise straight run gasoline & kerosene

Answer

Adsorb arsenic from feedstock to catalytic reforming

Question 4

Visbreaking

Accepted Answer

Produces fuel oil of lower viscosity

Answer

Uses natural gas as feed

Answer

Is carried out at atmospheric pressure

Answer

Produces gasoline only

Question 5

Which is the most desirable component of a good quality kerosene?

Accepted Answer

N-paraffins

Answer

I-paraffins

Answer

Aromatics

Answer

Naphthenes

Question 6

Crude oil is subjected to vacuum distillation in the last stage, because

Accepted Answer

High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose

Answer

Lighter/low boiling products are prone to thermal decomposition

Answer

High purity products can be obtained thereby

Answer

None of these

Question 7

Solution used in Doctor's treatment for the removal of mercaptans is

Accepted Answer

Sodium plumbite

Answer

Sodium hydroxide

Answer

Cupric chloride

Answer

Potassium isobutyrate

Question 8

Tetra-ethyl lead is added in gasoline to

Accepted Answer

Increase its octane number

Answer

Increase its smoke point

Answer

Reduce gum formation

Answer

Reduce the pour point

Question 9

Water content in the crude oil as it comes out of oil well may be upto __________ percent.

Accepted Answer

25

Answer

2

Answer

5

Answer

10