Understanding Fuels Quiz
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Questions and Answers

What is the primary purpose of a transportation fuel?

  • To consume oxygen
  • To serve as a reactant in fuel cells
  • To release energy as electric power
  • To carry energy in chemical form (correct)

    • Why is it preferable for a transportation fuel not to carry more than one reactant on a vehicle?

  • To minimize the weight of the vehicle
  • To reduce the risk of explosions
  • To obtain the second reactant from the atmosphere (correct)
  • To avoid the need for multiple types of engines

    • Why are hydrogen and carbon considered unique elements for making fuel?

  • Their oxides are non-toxic
  • They have enthalpy of oxidation greater than 10 kJ g-1 (correct)
  • Because they are the most abundant elements in nature
  • Due to their high energy densities as solids

    • What is the purpose of including oxygen atoms in a fuel?

    <p>To increase energy density</p> Signup and view all the answers

    Why is nitrogen considered a viable element for making fuel?

    <p>Because it can be exothermically converted to harmless N2</p> Signup and view all the answers

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