CAIE IGCSE Chemistry 11.3 Fuels Questions
Practise interpreting fuels, hydrocarbons and petroleum fractions using tables, refinery diagrams and combustion evidence.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- interpret refinery diagrams to order petroleum fractions by chain length and position
- link fuel properties and complete combustion products to methane and other hydrocarbons
Covered syllabus points
Question 1
The pie chart represents the composition of natural gas.
Which sector represents methane?
A
sector A
B
sector B
C
sector C
D
sector D
Question 2
Some properties of four fuels are shown.
Which fuel is a gas at room temperature and makes two products when it burns in a plentiful supply of air?
fuel
formula
melting point
boiling point
hydrogen
-259
-253
methane
-182
-164
octane
-57
126
wax
60
400
Question 3
Petroleum is an important fossil fuel.
Which row correctly describes petroleum?
type of substance
composition
compound
mainly hydrocarbons
compound
only hydrogen and carbon
mixture
mainly hydrocarbons
mixture
only hydrogen and carbon
Question 4
Petroleum is an important raw material that is separated into useful products.
Which terms describe petroleum and the method used to separate it?
description
separation method
compound
cracking
compound
fractional distillation
mixture
cracking
mixture
fractional distillation
Question 5
Increasing the number of atoms in one molecule of a hydrocarbon increases the amount of energy released when it burns.
What is the correct order?
less energy
released
more energy
released
ethene
ethane
methane
ethene
methane
ethane
methane
ethane
ethene
methane
ethene
ethane
Question 6
In an oil refinery, petroleum is separated into useful fractions.
The diagram shows some of these fractions.
What are fractions X, Y and Z ?
X
Y
Z
fuel oil
bitumen
paraffin (kerosene)
fuel oil
paraffin (kerosene)
bitumen
paraffin (kerosene)
bitumen
fuel oil
paraffin (kerosene)
fuel oil
bitumen
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