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Nuclear Power Engineering

Nuclear Power Engineering
Pressure of CO₂ gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm² .

50
35
7
0.2

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Nuclear Power Engineering
The ratio of atomic radius to its nuclear radius is about

10⁵
10¹²
10⁸
10¹⁵

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Nuclear Power Engineering
The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.

6.25
12.5
3.125
25

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Nuclear Power Engineering
The critical mass of a fissionable material can be reduced by

Surrounding it by neutron absorbing material
Cooling it
Heating it
Surrounding it by neutron reflecting material

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Nuclear Power Engineering
Solar energy results from __________ reaction.

Combustion
None of these
Thermonuclear
Fission

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Nuclear Power Engineering
The molecular weight of heavy water is

10
36
18
20

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