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Nuclear Power Engineering

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

12.5
25
3.125
6.25

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Nuclear Power Engineering
Positron is a/an

Nucleus having two protons
Helium nucleus
Nucleus with one proton and one neutron
Electron with positive charge

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Nuclear Power Engineering
Critical mass is the minimum mass of nuclear fissile material required for the

Power generation on commercial scale
Sustainment of chain reaction
None of these
Economic power generation

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Nuclear Power Engineering
Both tritium and deuterium have the same number of

Nucleons
Electrons
Protons
Neutrons

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Nuclear Power Engineering
The phenomenon of radioactivity was discovered by

Madam Curie
J.J. Thomson
Bacquerrel
Roentgen

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Nuclear Power Engineering
Which of the following is artificially produced as it does not occur in nature?

Plutonium⁻²39
Both B and C
Uranium⁻²35
Uranium⁻²33

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