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The Quiz on Hydrogen-powered Vehicles
by Staff
Hydrogen-powered vehicles may be the wave of the future, but do you know why? Test your knowledge of this extremely light, clean-burning fuel source with the hydrogen-powered vehicle quiz.

What percentage of the universe is made up of hydrogen?

  • 50 percent
  • 60 percent
  • 75 percent

Which of the following is not a method of producing pure hydrogen?

  • removal from water through electrolysis
  • extraction from animal fat
  • extraction from natural gas

What are the byproducts of a hydrogen fuel cell?

  • oxygen and hydrogen
  • heat and water
  • water and carbon

A fuel cell utilizes what percentage of the available energy in hydrogen?

  • 50 percent
  • 60 percent
  • 70 percent

What's the price of one kilowatt of electricity produced from current fuel cells?

  • $50
  • $225
  • $400

Many of the methods currently used to extract hydrogen from larger molecules rely on:

  • heat
  • bacteria
  • electricity

Why is storage a problem for hydrogen fuel?

  • it takes up large amounts of space
  • it loses efficiency over time
  • it evaporates readily

What might liquid hydrogen do to your skin upon contact?

  • cause a rash
  • cause frostbite
  • cause a lesion

What color are hydrogen flames?

  • blue
  • orange
  • nearly invisible

Despite the potential dangers of hydrogen as a fuel source, why does it pose relatively low risk?

  • it's expensive
  • it's light
  • it's a liquid