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Nuclear Power Engineering

Nuclear Power Engineering
Moderating material used in a thermal-reactor should be a

Poor absorber of neutrons
Good absorber of neutrons
Solid substance
None of these

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Nuclear Power Engineering
The emission of an a-particle causes the resultant nucleus to have

Less atomic weight and less atomic number
More atomic weight and less atomic number
None of these
Less atomic weight and more atomic number

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Nuclear Power Engineering
Coolant used in a fast breeder reactor is

Heavy water
Helium
Ordinary water
Molten sodium

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Nuclear Power Engineering
The half life period of a radiactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm.

43834
43846
43838
43832

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Nuclear Power Engineering
Out of the following, nucleus of __________ atom contains the largest number of neutrons.

U-239
U-235
Pu-239
U-238

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Nuclear Power Engineering
Heavy water is preferred over ordinary water as a coolant, because it.

All of these
Acts both as an efficient coolant as well as a moderator
Can be heated to a higher temperature without pressurizing
Is less prone to radiation damage

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