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Sulfur dioxide from transport fuels
Transport is a source of atmospheric pollutants.
Suggest how sulfur dioxide can be produced by transport.
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Marking points
- 1 States that transport fuel contains sulfur.
- 2 Explains that sulfur reacts with oxygen to form sulfur dioxide.
Full-mark answer
Some transport fuels contain sulfur. When the fuel burns, the sulfur reacts with oxygen and produces sulfur dioxide.
Why this answer loses marks
Vehicle exhausts contain sulfur dioxide.
This states the pollutant but does not explain that sulfur in the fuel reacts with oxygen during burning.