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Nuclear Power Engineering

Nuclear Power Engineering
The main ore of thorium is

Monazite sand
Galena
Pitchblende
Limonite

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

Zircalloy
Molybdenum
Boron or cadmium
High carbon steel

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Nuclear Power Engineering
A moderator __________ the neutrons.

Accelerates
Slows down
Reflects
Absorbs

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

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

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Nuclear Power Engineering
75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.

3
43894
4
43836

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Nuclear Power Engineering
Graphite is used in nuclear reactor as

Retarder of neutron velocity
Insulation lining of the reactor
Lubricant
Fuel

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