Thorium is mainly used _______________?
Correct answer: C. For the manufacture of gas mantles
- A. In the manufacture of hydrogen bomb
- B. As a fissile fuel in a nuclear reactor
- C. For the manufacture of gas mantles
- D. In the treatment of cancer
Explanation
Thorium compounds were historically used in incandescent gas mantles because thorium oxide produces a bright, heat-resistant glow. Thorium-232 is fertile rather than directly fissile, so it is not itself the usual fissile reactor fuel.
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