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Nuclear Power Engineering

Nuclear Power Engineering
The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

159
1837
10000
2537

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Nuclear Power Engineering
__________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.

Helium
Hydrogen
Nitrogen
Carbon dioxide

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Nuclear Power Engineering
Which of the following isotopes is not present in natural uranium?

U-234
U-232
U-235
U-238

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Nuclear Power Engineering
When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as

Isotones
Isobars
Isotopes
Isomers

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Nuclear Power Engineering
U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent.

85
97
3
50

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Nuclear Power Engineering
75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.

43836
43894
4
3

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