Post-UTME Physics 2012 Objective — Question 7
Question 7 of 7 from the Post-UTME Screening (Post-UTME) Physics 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following is used to slow down fast moving neutrons in a nuclear reactor?
- A. Concrete shield
- B. carbon dioxide gas
- C. Boron rods
- D. Graphite blockCorrect
Explanation
A moderator such as a graphite block is used to slow down fast neutrons in a nuclear reactor (boron rods are control rods, which absorb neutrons).
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