Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Crude Oil
106 practice questions
Topics covered
Practice questions
21–30 of 44 · Easy
Question 21
1 mark · Easy
Answer and see the solution →State one product, other than carbon dioxide, formed during the incomplete combustion of a hydrocarbon fuel.
Question 22
3 marks · Easy
Answer and see the solution →The diagram shows a simplified fractional distillation column for crude oil. The temperature at three different positions is marked.
Fractionating column (simplified, labelled) The temperature at the bottom is 370 C, in the middle is 220 C, and at the top is 40 C.
(a)[1 mark]State what happens to the hydrocarbons as their vapours rise up the column.
(b)[1 mark]Name the fraction collected at the top of the column.
(c)[1 mark]Explain why some hydrocarbons are collected at the bottom instead of higher up.
Question 23
2 marks · Easy
Answer and see the solution →Crude oil is separated in a fractionating column. A crude oil sample produces 100 kg of gasoline, 60 kg of kerosene, and 30 kg of diesel oil after fractional distillation. The total mass of these fractions is collected.
Calculate the percentage by mass of the gasoline fraction in the sample. Give your answer to 1 decimal place.
Question 24
2 marks · Easy
Answer and see the solution →A hydrocarbon burns in exactly 20 g of oxygen during complete combustion. Calculate the mass of carbon dioxide produced if all the oxygen is converted into carbon dioxide. (Assume all atoms from oxygen go into making carbon dioxide; ignore water formation for this calculation. Relative atomic masses: C = 12, O = 16)
Question 25
1 mark · Easy
Answer and see the solution →State one typical use of refinery gases.
Question 26
3 marks · Easy
Answer and see the solution →(a)[1 mark]Name the main use of gasoline (petrol).
(b)[2 marks]State two different reasons why gasoline is suitable for this use.
Question 27
2 marks · Easy
Answer and see the solution →Explain why gasoline (petrol) is mainly used in cars, instead of being used as a domestic fuel for heating.
Question 28
3 marks · Easy
Answer and see the solution →The table shows the percentage use of refinery gases in different applications. Application Percentage (%) Domestic heating 60 Cooking 30 Other industrial uses 10 (a)[1 mark]Which application uses the greatest proportion of refinery gases?
(b)[1 mark]Calculate the total percentage of refinery gases used for domestic purposes (heating and cooking).
(c)[1 mark]State one industrial use of refinery gases, other than heating or cooking.
Question 29
1 mark · Easy
Answer and see the solution →State the main use of gasoline (petrol).
Question 30
2 marks · Easy
Answer and see the solution →A 12 kg gas cylinder is used for cooking in a household kitchen. The gas inside is refinery gas (LPG), which is a typical use of refinery gases.
Suppose each meal uses 0.5 kg of LPG. Calculate the maximum number of meals that can be cooked with a full 12 kg cylinder.