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Nuclear Power Engineering

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

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

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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.

97
50
85
3

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Nuclear Power Engineering
The atomic mass of an element is fractional, because

It may have isotopes
It contains neutrons
Of uncertainty principle
It may have isobars

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Nuclear Power Engineering
Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of

High carbon steel
Zircalloy
Boron or cadmium
Molybdenum

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Nuclear Power Engineering
Radioactive decay of a material involves a __________ order reaction.

Zero
Second
First
Third

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Nuclear Power Engineering
The disintegration rate of a radioactive element

May increase or decrease depending on the material
Progressively decreases
Progressively increases
Remains constant throughout

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