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Nuclear Power Engineering

Nuclear Power Engineering
Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactor?

H₂
N₂
CO₂
He

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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.

43846
43838
43832
43834

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Nuclear Power Engineering
Sodium melts (at atmospheric pressure) at a temperature of __________ °C.

348
588
98
58

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Nuclear Power Engineering
Radioactive decay is a __________ change.

Physical
Nuclear
None of these
Chemical

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Nuclear Power Engineering
The most abundant isotope of natural uranium is

92U235
92U234
None of these
92U238

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Nuclear Power Engineering
'Heavy water' is termed as 'heavy' because it is

Denser than water
An oxide of deuterium
An oxide of heavier isotope of oxygen
A heavy liquid

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