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Nuclear Power Engineering

Nuclear Power Engineering
Sodium melts (at atmospheric pressure) at a temperature of __________ °C.

98
588
348
58

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Nuclear Power Engineering
Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.

Fuel elements
Walls of the reactor
Operating personnels
None of these

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Nuclear Power Engineering
The molecular weight of heavy water is

18
10
36
20

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

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

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Nuclear Power Engineering
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is

1
4
0.5
2

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Nuclear Power Engineering
How many atoms are present in one gm-atom of an element?

6 x 10²³
2 x 10²³
5 x 10⁵
6 x 10³²
5 x 10?

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