A technician compares four fuels.
| Fuel | Composition |
|---|---|
| W | A compound containing carbon and hydrogen only |
| X | A mixture containing carbon, hydrogen and a sulfur impurity |
| Y | Hydrogen only |
| Z | Carbon only |
Which fuel could release sulfur dioxide when burned?
Fuel W
Fuel Y
Fuel Z
Fuel X
102 exam-style questions on AQA GCSE Chemistry 9.3 Common atmospheric pollutants and their sources, covering 9.3.1 Atmospheric pollutants from fuels and 9.3.2 Properties and effects of atmospheric pollutants. Each one has a worked solution and a mark scheme showing where the marks go.