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9.3 Common atmospheric pollutants and their sources

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Question 20

Researchers investigated how pollutants released by combustion affect the amount of light passing through air.

A lamp produced a light intensity of 800 W/m² at the bottom of a transparent chamber containing clean air. In separate tests, the researchers added an equal mass of each pollutant to the chamber.

Pollutant sampleState of pollutantLight intensity at the bottom of the chamber in W/m²
Pgas792
Qsolid615
Rgas788
Sgas795
a.

Which sample could contribute most to global dimming?

[1]
b.

Explain how the information in the table supports your answer to part (a).

[3]
c.

Suggest one health benefit of reducing emissions of sample Q.

[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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