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9.3 Common atmospheric pollutants and their sources

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Question 3
H

Figure shows air and fuel entering one cylinder of a car engine, and the exhaust gases leaving it.

Figure: Air and fuel entering one cylinder of a car engine, and the exhaust gases leaving it

image

a.

The exhaust gases contain oxides of nitrogen. Explain how the oxides of nitrogen are formed inside the cylinder.

[2]
b.

The same fuel is burned in pure oxygen instead of in air.

Explain why no oxides of nitrogen are formed.

[1]
Markscheme

9.3 Common atmospheric pollutants and their sources Questions

  1. GCSE
  2. /Chemistry
  3. /9.3 Common atmospheric pollutants and their sources

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.

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