Which of the Following Statements Regarding a Fission Based Nuclear

question 26

Multiple Choice

Which of the following statements regarding a fission based nuclear reactor is not correct?

• A)A nuclear fission reactor uses the heat energy released by the fission of U-235 to produce steam.
• B)The control rods in a nuclear reactor contain materials which absorb neutrons.
• C)The moderator in a fission reactor slows down the neutrons produced from the fission of U-235.
• D) (heavy water),graphite,and H₂O (light water)have been used as moderators in fission reactors.
• E)The uranium dioxide fuel pellets used in a U.S.light-water reactor are made up mostly of the U-235 isotope.

---

Definitions:

Ethanol

A volatile, flammable, colorless liquid alcohol, used as a solvent and in the manufacture of organic chemicals and biofuels.

Methanol

A simple alcohol with the formula CH₃OH, used as a solvent, antifreeze, fuel, and as feedstock for chemical synthesis.

Balanced Equation

A chemical equation in which the number of atoms for each element is the same on both the reactant and product sides.

Propanol

An alcohol with the chemical formula C3H8O, used as a solvent and antiseptic.