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Nuclear Power Engineering

Nuclear Power Engineering
Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is

3
235
92
200

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Nuclear Power Engineering
Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec.

3 x 10¹¹
1
2200
9 x 10²¹

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Nuclear Power Engineering
The function of moderators in nuclear reactor is to

None of these
Slow down the secondary neutrons
Control the chain reaction
Absorb the secondary neutrons

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Nuclear Power Engineering
The time required for half of the __________ of a radioactive isotope to decay is called its half life.

Protons
Electrons
Neutrons
Nuclei

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Nuclear Power Engineering
The most abundant isotope of natural uranium is

None of these
92U234
92U238
92U235

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Nuclear Power Engineering
Which of the following ores contains maximum percentage of uranium?

Pitchblende
Carnotite
Thorium
Rescolite

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