Reduction of Air Pollutants (College Board AP® Environmental Science): Exam Questions

5 mins5 questions
11 mark

Which of the following best describes the purpose of a vapor recovery nozzle?

  • The nozzle captures VOCs.

  • The nozzle captures vapors and expels them into the atmosphere

  • The nozzle is an air pollution control device on a gasoline pump

  • The nozzle prevents benzene from escaping from an underground storage tank

     

21 mark

Which of the following regulations is specifically aimed at reducing emissions of ozone-depleting substances?

  • Kyoto Protocol  

  • The Paris Agreement  

  • Montreal Protocol  

  • European Union's Air Pollution Thematic Strategy  

31 mark

How does a catalytic converter reduce harmful emissions in vehicles?

  • By increasing the combustion efficiency of the engine  

  • By converting toxic gases into less harmful compounds through chemical reactions  

  • By filtering out particles from the exhaust gases  

  • By absorbing excess heat from the exhaust gases  

41 mark

Which of the following describes the function of a wet scrubber?

  • It uses dry reagents to neutralise exhaust gases  

  • It filters particulates from exhaust gases using water  

  • It uses calcium oxide to react with sulfur dioxide  

  • It converts gaseous pollutants into solid waste  

51 mark

Which of the following best describes the process of flue gas desulfurization (FGD)?

  • Sulfur dioxide reacts with calcium sulfate to form a clean gas  

  • Calcium oxide and calcium carbonate react with sulfur dioxide to form calcium sulfate  

  • Flue gases are directly emitted without any treatment  

  • Sulfur dioxide is absorbed by activated carbon in the scrubbing chamber