The diagram shows an industrial process involved in the production of a substance that is used as an aircraft fuel.
| process | substance Q | |
| A | fractional distillation | petrol |
| B | thermal decomposition | paraffin |
| C | fractional distillation | paraffin |
| D | thermal decomposition | petrol |
Did this page help you?
The table below shows 4 different sources of petroleum (crude oil) and their composition.
| Fraction | Arabian Heavy /% | Arabian Light /% | Iranian Heavy /% |
North Sea /% |
| gasoline | 18 | 21 | 21 | 23 |
| kerosene | 11.5 | 13 | 13 | 15 |
| diesel | 18 | 20 | 20 | 24 |
| fuel oil | 52.5 | 46 | 46 | 38 |
Which composition of petroleum would be the best for the motor vehicle industry?
North Sea
Arabian Heavy
Arabian Light
Iranian Heavy
Did this page help you?
Which of the following properties of different compounds in petroleum enable it to be separated into fractions?
| 1 | Chain length | |
| 2 | Chemical reactivity | |
| 3 | Solubility in water | |
| 4 | Boiling point |
1 & 3
1 & 4
2 & 3
2 & 4
Did this page help you?
The diagram below shows the apparatus used to separate petroleum (crude oil) into four fractions.
Which fraction contains the smallest hydrocarbon molecules?
| fraction | boiling point range / °C |
| A | up to 70 |
| B | 71 to 120 |
| C | 121 to 170 |
| D | over 171 |
Did this page help you?
The diagram shows a fractionating column used in the separation of petroleum.
Which row explains why fraction R is collected above fraction S?
|
|
boiling point of R |
average molecular mass of R |
|
A |
greater than S |
greater than S |
|
B |
greater than S |
smaller than S |
|
C |
smaller than S |
greater than S |
|
D |
smaller than S |
smaller than S |
Did this page help you?