The Biofuel Quiz
by Staff
What do vegetable oil, corn and salt water have in common? They're all potential fuel sources for our cars. See how much you know about the next generation of biofuels in our Biofuel Quiz.

All biofuels are made from:

  • corn
  • animal fat
  • biological ingredients

Which of the following is not a potential biofuel?

  • grassoline
  • hydrogen fuel cells
  • algae biodiesel

With B20 biodiesel, the "20" indicates the percentage of what?

  • biodiesel fuel
  • standard fuel
  • energy

Ethanol refers to any biofuel made from:

  • grass
  • corn
  • plant carbohydrates

What's the primary source of biodiesel?

  • soybeans
  • plant oil
  • animal fat

When was vegetable oil first proven as a fuel source?

  • 1900
  • 1940
  • 1990

When were algae first explored as a fuel alternative?

  • 1978
  • 1988
  • 1998

How many gallons of biodiesel could a 100-acre (40-hectare) algae biodiesel plant potentially produce in a year?

  • 100,000 gallons (378,541 liters)
  • 1 million gallons (3.8 million liters)
  • 10 million gallons (38 million liters)

Which of the following is not one of the criticisms of biofuel?

  • increased food prices
  • more crowded highways
  • less food for hungry countries

In Brazil, what's the main source of ethanol?

  • corn
  • switchgrass
  • sugarcane