Air Pollution Basics
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Questions and Answers

What is the minimum percentage of dust, pollen, and other particles that a HEPA filter can remove?

  • 95%
  • 99.97% (correct)
  • 99.9%
  • 100%

    • What is the name of the atmospheric condition where a layer of cooler air is trapped near the ground by a layer of warmer air above?

  • Condensation
  • Inversion (correct)
  • Transpiration
  • Evaporation

    • How many criteria pollutants does the EPA set National Ambient Air Quality Standards for?

  • 7
  • 5
  • 4
  • 6 (correct)

    • What is the primary source of ground-level ozone?

    <p>Chemical reactions between NOx and VOC (C)</p> Signup and view all the answers

    Which of the following pollutants is NOT considered a criteria pollutant by the EPA?

    <p>Carbon dioxide (B)</p> Signup and view all the answers

    What is the typical size of particles that a HEPA filter can remove?

    <p>0.3 microns (D)</p> Signup and view all the answers

    What is the purpose of the National Ambient Air Quality Standards set by the EPA?

    <p>To protect public health and the environment (C)</p> Signup and view all the answers

    What is the result of inversion in the atmosphere?

    <p>Increased air pollution (D)</p> Signup and view all the answers

    Which of the following pollutants is NOT a criteria pollutant, but is a harmful greenhouse gas?

    <p>Carbon dioxide (B)</p> Signup and view all the answers

    What is the typical source of particle pollution?

    <p>Vehicles and power plants (C)</p> Signup and view all the answers

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