Answer all the multiple choice questions below to test your knowledge on the fractional distillation of oil. Hit the check answer button to get your score when you have completed the quiz.
1. What is crude mainly composed of?
2. What two elements are hydrocarbons made from?
3. Why is crude oil not useful in its raw natural state?
4. Crude oil is separated into fractions using a process called , this takes place at an oil .
5. What property allows the different fractions to be separated out from crude oil?
6. What happens to the crude oil before it enters the fractionating column?
7. What is the temperature gradient inside the fractionating column?
8. Where do large hydrocarbon molecules condense in the fractionating column?
a) At the top b) At the bottom c) In the middle d) They do not condense
9. Which of the following fractions condenses closest to the top of the fractionating column?
a) Lubricating oil b) Diesel c) Petrol d) Bitumen
10. What is the naphtha fraction mainly used for?
a) Fuels b) Road surfacing c) Feedstocks for the chemical industries d) Cooking
11. What does it mean when hydrocarbons condense?
a) Turn from a solid to a gas b) Turn from a gas to a solid c) Turn from a gas to a liquid d) Turn from a liquid to a solid
12. What is the correct order of condensation from the bottom to the top of the fractionating column?
a) Petrol-diesel-bitumen b) Bitumen-diesel-petrol c) Diesel-bitumen-petrol d) Petrol-bitumen-diesel
13. Why do smaller molecules rise higher up the fractionating column than larger ones?
a) They have lower boiling points b) They have higher boiling points c) They have lower densities d) They have higher densities
14. What happens to the parts or fractions in the crude oil that do not vapourise?
a) They are burned b) They condense close to the bottom of the fractionating column c) They are removed at the base of the fractionating column d) They explode
15. Which of the following is not a product obtained from crude oil?
a) Kerosene b) Etanol c) Naphtha d) Bitumen
