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81
The decrease in the atomic number is not observed in case of
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Answer: Option B
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82
The critical mass of a fissionable material can be reduced by
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Answer: Option C
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83
Nuclear fuel usually used in a Boiling Water Reactor (BWR) is
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Answer: Option B
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84
The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about __________ metres/second.
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Answer: Option B
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85
Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is
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Answer: Option A
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86
Pick out the correct statement.
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Answer: Option A
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87
Which of the following is present in Bhabha Atomic Research Centre (BARC) complex, Trombay (Bombay)?
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Answer: Option B
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88
Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of
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Answer: Option D
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89
Which is a fertile nuclear fuel?
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Answer: Option D
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90
Which of the following is not used as a nuclear fuel cladding material?
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Answer: Option B
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