Petroleum Refinery Engineering Multiple Choice Questions and Answers

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

16. What two processes are carried out in oil refineries to modify the octane number of hydrocarbons?

1. Isomerisation and dehydrocyclisation
2. Electrolysis and catalytic cracking
3. Isomerisation and Electrolysis
4. Catalytic cracking and dehydrocyclisation

17. When crude oil is heated and passed through a fractionating column, the different fractions separate out according to their

1. melting points
2. densities
3. colours
4. boiling points

18. Which is the most undesirable component in kerosene ?

1. Aromatics
2. n-paraffins
3. Naphthenes
4. i-paraffins

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