Oxidation-Reduction — Cumulative exam Answers

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21
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If an unshielded sample of radioactive material emits alpha particles, what effect will it have on a person sitting in the next room? (Assume the wall between rooms is composed of concrete.)

A
None, because the wall will block the radiation.
B
The radiation will travel through the person’s body.
C
None, because the radiation will bounce off the person’s body.
D
The radiation will be totally absorbed by the person’s body.
23

When ammonium chloride is dissolved in water, the beaker gets cold. Which type of reaction does this describe?

A
exothermic
B
endothermic
C
both exothermic and endothermic
D
neither exothermic nor endothermic
24

Which issue poses the greatest long-term challenge in the development of new nuclear power plants?

A
controlling carbon dioxide emissions
B
storage of radioactive waste
C
controlling fission reactions
D
mining of uranium

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