ETHANOL EVALUATION
TRUE/FALSE: Circle the letter "T" for each true statement or "F" for each false
statement.
T F 1. It is in the interest of Iowa citizens to market corn as
ethanol.
T F 2. A molecule of ethanol is composed of more hydrogen atoms
than carbon atoms.
T F 3. The technology used to make ethanol involves the use
of enzymes.
T F 4. Use of E-10 blends will greatly affect U.S. food supplies.
T F 5. The effects of using E-10 blends on air quality in large
cities is of great concern to the EPA.
T F 6. CO2, a co-product of ethanol production, is growing in
importance.
T F 7. Variable fuel vehicles use a sensor to determine the amount
of ethanol in gasoline.
MULTIPLE CHOICE: Place the letter of the best answer in the blank provided at the
left of each question.
_____ 1. What country uses the most ethanol in its transportation fuels market?
A. Argentina D. France
B. Brazil E. United States
C. China
_____ 2 . How much ethanol is produced in the United States every year?
A. 150 million gallons C. 1.5 billion gallons
B. 900 million gallons D. 15 billion gallons
_____ 3. Which of these pollutants are reduced by the use of ethanol?
A. Carbon monoxide D. Volatile Organic Compounds
B. Oxides of Nitrogen (NOx) E. Greenhouse Gas
C. Particulate Matter F. All of the above
_____ 4. How many jobs in the U.S. are supported by the domestic ethanol
industry?
A. 25,000 C. 55,000
B. 40,000 D. 192,000
_____ 5. Which of the following sources can be used to produce ethanol?
A. Beer residues D. Yard clippings
B. Paper sludge E. All of the above
C. Sawdust
_____ 6. How much oil does the U.S. import today to meet its energy needs?
A. 28% C. 54%
B. 45% D. 66%
_____ 7. How many tons of distillers grain, a byproduct of the ethanol
production process, are produced each year?
A. 500 million C. 1.4 billion
B. 1.2 billion D. 1.8 billion
_____ 8. Which of the following U.S. car manufacturers recommend the use of
ethanol in their vehicles?
A. Chrysler D. Toyota
B. Ford E. all of the above
C. General Motors
_____ 9. What percentage of Americans are concerned about our foreign oil
imports?
A. 15% C. 50%
B. 30% D. 75%
_____ 10. Distillation refers to
A. separating substances with different boiling points
B. adding yeast to a mash and allowing it to work
C. diluting substances such as ethanol with other solvents
D. adding enzymes to convert large molecules into smaller ones
E. adding a base or acid to change the pH
_____ 11. Which of these would NOT occur if all gasoline sold contained ethanol?
A. auto repair shops would be very busy
B. corn prices would rise
C. employment in Iowa would increase
D. food supplies would remain stable
E. the air would be cleaner.
_____ 12. Which of these is NOT a key aspect in producing ethanol?
A. grinding corn into a fine powder
B. scrubbing corn to remove pesticides and insect residue
C. processing of co-products for sale
D. converting starch in corn to sugar
E. yeast fermentation
_____ 13. Which of these is NOT a reason for using E-10 blends?
A. helps to improve air quality
B. makes use of surplus corn crops
C. results in cleaner engine components
D. increases vehicle emission levels
E. improves U.S. trade deficit
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