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Nuclear Power Engineering

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

9 x 10²¹
3 x 10¹¹
2200
1

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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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Nuclear Power Engineering
The atomic number of a radioactive element is not changed, when it emits __________ rays.

α
β
α & β
γ

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Nuclear Power Engineering
The 92U238 emits an a-particle. The product is

90U238
90U234
90U236
92U236

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Nuclear Power Engineering
Radioactive decay is a __________ change.

Nuclear
Physical
None of these
Chemical

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

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

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