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CAIE A-Level Chemistry AS 14.1.6 Combustion Pollutants and Catalysts Questions

Practise identifying carbon monoxide, nitrogen oxides and unburnt hydrocarbons, explaining their hazards and environmental effects, and describing catalytic-converter removal in…

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • identify carbon monoxide, nitrogen oxides and unburnt hydrocarbons as combustion pollutants from internal-combustion engines
  • explain environmental or health consequences such as toxicity, acid rain, photochemical smog and global dimming
  • describe how catalytic converters remove pollutants through oxidation and reduction reactions on the catalyst surface

CAIE A-Level Chemistry AS 14.1.6 Combustion Pollutants and Catalysts Questions question 1

[Maximum number: 1]

Polymer Z is useful because it absorbs large amounts of water. However, there are problems associated with the disposal of products containing polymer Z.

Combustion is not an appropriate method to dispose of pure Z because the process releases harmful gases. Some of these gases contribute to the enhanced greenhouse effect.

Identify another gas which could be produced during the combustion of pure Z. Describe a consequence, other than the enhanced greenhouse effect, of its release into the atmosphere.
gas
consequence

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