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The Ultimate Air Purifier Quiz
by Staff
It's safe to say that sometimes you probably can't breathe well indoors, whether it be from smoke, strong cooking odors or dust. Do you just have to live with it, or is there something that can be done? Take this quiz to see how much you know about improving your indoor air quality.

How much do Americans spend per year on air purifiers?

  • $150 million
  • $250 million
  • $350 million

Why is air inside your home often dirtier than outside?

  • because of contaminants such as mold, dust and pet dander
  • because heating and cooling systems don't bring air from the outside to the inside
  • because of built-up cooking smells

Who is most affected by poor indoor air quality?

  • teenagers
  • adults age 65 and older
  • people with allergies and respiratory difficulties

What do air filters do?

  • They separate oxygen from carbon dioxide in air.
  • They remove humidity from the air.
  • They filter air particles to remove contaminants.

What shape of the material in an air filter is the most effective at cleaning the air?

  • a thin disc
  • a pleated shape
  • tight coils

What is the purpose of a filter cartridge in a heating or cooling unit?

  • to filter the air and prevent damage from dust and dirt buildup
  • to heat or cool the air
  • to compress and expel dust and dirt

How effective are high-efficiency particulate air (HEPA) filters?

  • They allow 0.3 percent penetration of particles that are 0.03 micrometers in size.
  • They allow less than 0.03 percent penetration of particles that are larger than 0.3 micrometers in size.
  • They completely sterilize air.

What industry uses the ultra-low penetration air (ULPA) filter?

  • nuclear power
  • fabric mills
  • dairy processing

What happens when ionizing purifiers use a corona discharge?

  • Molecules pass through, pick up an electron and take on either a positive or negative charge.
  • Static electricity in the air is discharged.
  • Ionized particles change the corona discharge into negative energy.

Where does an ozone generator get oxygen from?

  • It creates oxygen.
  • It uses an oxygen tank.
  • It extracts oxygen from air molecules.

How stable is ozone?

  • It's very stable in low altitudes.
  • It's only unstable in upper levels of the atmosphere.
  • It's not very stable at all.

What is adsorbent material used for?

  • It traps one substance on the surface of another.
  • It cleans up hazardous spills.
  • It evaporates moisture in the air.

Why is activated charcoal the most commonly used adsorbent material?

  • It is porous and contains many microscopic spongelike caverns.
  • It has antibacterial properties.
  • Its black color absorbs heat in the air and helps to lower temperatures.

What do CADR numbers refer to?

  • the effectiveness of air purifiers
  • the speed at which the air is purified
  • the amount of pure oxygen in air

Why would a company use an industrial air purifier in addition to its heating and cooling system?

  • Industrial air purifiers make commercial heating and cooling systems more efficient.
  • Certain companies are required to use air purifiers.
  • It's impressive to stakeholders and looks good in the company's annual report.

How many times a minute is the air in the "clean room" at the Intel computer company purified?

  • five
  • 10
  • 15

What criticism about air purifiers has been shown to be true?

  • They cost too much to run.
  • Home models are not effective.
  • Ozone air purifiers are harmful.

Why don't ozone air purifiers sold in the U.S. require Food and Drug Administration (FDA) approval?

  • because manufacturers aren't making claims about their health benefits
  • because the air purifiers are regulated by the U.S. Environmental Protection Agency
  • because air purifiers are not food or drugs

What does the U.S. Environmental Protection Agency (EPA) recommend regarding indoor air quality?

  • People should use buy only EPA-approved air purifiers.
  • People should use proven methods of minimizing indoor air pollution.
  • The EPA does not recommend using air purifiers.

Which of the following is NOT a good tip to control indoor air pollution?

  • Only smoke outside, turn on fans when cooking and open windows to let in fresh air.
  • Use bleach, ammonia and other strong cleansers to thoroughly disinfect tubs, sinks and toilets.
  • Dust and vacuum your home regularly to remove mold, pet hair and other allergens.