Chemistry 0620 · IGCSE · Air quality and climate

Air quality and climate — practice question

Gases that cause acid rain are formed in car engines. A catalytic converter can be used to remove these gases. Which equation represents the removal of one of these gases by a catalytic converter?

  • A$\text{CO}_2 + \text{C} \rightarrow 2\text{CO}$
  • B$2\text{CO} + 2\text{NO} \rightarrow 2\text{CO}_2 + \text{N}_2$
  • C$\text{N}_2 + 2\text{O}_2 \rightarrow 2\text{NO}_2$
  • D$2\text{NO} + \text{O}_2 \rightarrow 2\text{NO}_2$

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