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61
Number of secondary neutrons emitted on fission of an atom of U-235 on slow neutron bombardment is
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Answer: Option A
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62
The main ore of thorium is
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Answer: Option B
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63
Which is used as a coolant in nuclear reactor due to high neutron capture cross-section?
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Answer: Option A
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64
Which is not a fissile nuclear material?
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Answer: Option C
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65
Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature & pressure limits of the reactor?
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Answer: Option D
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66
Thorium metal
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Answer: Option D
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67
Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an . . . . . . . . reactor.
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Answer: Option C
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68
Pick out the wrong statement about a fast breeder reactor. A fast breeder reactor
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Answer: Option A
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69
Which of the following is the best nuclear fuel?
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Answer: Option C
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70
Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactors?
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Answer: Option A
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