Petroleum Refinery Engineering MCQ Questions and Answers for Practice

1. .................is not an important refinery process for upgrading the quality of lubricating oil

1. Solvent refinning
2. Hydrotreatment
3. Deoiling
4. Clay treatment

2. A good lubricant should have high

1. volatility
2. pour point
3. viscosity index
4. none of these

3. At a refinery, crude oil is separated into its components by

1. filtration
2. catalytic cracking
3. fractional distillation
4. decanting

4. Crude oil is pumped by a ............pump

1. gear
2. screw
3. centrifugal
4. reciprocating

5. High-octane compounds are used to prevent knocking in petrol engines. Which one of the following features is not present in igh-octane compounds?

1. Presence of one or more ring structures
2. High degree of branching
3. Short chain length
4. Presence of C=C bonds

6. Hydrogen is obtained from methane by a process called

1. hydrogenation
2. catalytic cracking
3. isomerisation
4. steam reforming

7. In which fraction of crude oil do pentane and its isomers occur?

1. Gas oil
2. Naphtha
3. Fuel oil
4. Light gasoline (petrol)

8. Oxygenates are added to petrol. Why is this?

1. To increase the octane number of the petrol.
2. To make the petrol less flammable.
3. To cause catalytic cracking.
4. To decrease the toxicity of the petrol.

9. Pour point and freezing point is equal for

1. diesel
2. petrol
3. crude petroleum
4. water

10. The fraction of crude oil that is used in LPG (liquid petroleum gas) is

1. refinery gas
2. gas oil
3. naphtha
4. residue

11. The fraction of crude oil used in petrol is

1. kerosene
2. gas oil
3. light gasoline
4. fuel oil

12. To prevent knocking in petrol engines, compounds called oxygenates are added to the petrol. Which one of the following is NOT considered an oxygenate?

1. Ethanol
2. MTBE
3. Octane
4. Ether

13. Viscosity index of a lubricating oil

1. none of these.
2. should be low.
3. is the measure of variation of viscosity with temperature.
4. is the measure of its flash point.

14. What does LPG stand for?

1. Liquid petroleum gas
2. Liquid plastic gas
3. Light Petroleum gas
4. Low petrol gas

15. What is the major use for the light gasoline and naphtha fractions of crude oil?

1. Diesel fuel
2. Bitumen
3. Petrol/motor fuel
4. Liquid petroleum gas