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Chemical Engineering
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Nuclear Power Engineering
Comments
Question
Which of the following is not used as a moderator in nuclear reactor?
Options
A. Molten sodium
B. Light water
C. Beryllium
D. Boron hydride
Correct Answer
Molten sodium
Nuclear Power Engineering problems
Search Results
1. Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material.
Options
A. thorium-233
B. uranium-235
C. uranium-233
D. plutonium-239
Show Answer
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Discuss
Correct Answer: uranium-233
2. Which of the following undergoes fission reaction easily?
Options
A. U-235
B. U-238
C. Th-232
D. none of these
Show Answer
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Discuss
Correct Answer: U-235
3. Percentage of heavy water in ordinary water is around
Options
A. 0.015
B. 7.54
C. 0.71
D. 32.97
Show Answer
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Discuss
Correct Answer: 0.015
4. Which of the following factors is the most important in the site selection for a nuclear power plant?
Options
A. Absence of earthquake prone zone in nearby areas.
B. Abundant availability of water.
C. Remotely located from residential areas.
D. Proximity to fuel source.
Show Answer
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Discuss
Correct Answer: Absence of earthquake prone zone in nearby areas.
5. When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as
Options
A. isomers
B. isotopes
C. isobars
D. isotones
Show Answer
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Discuss
Correct Answer: isotones
6. Radioactive decay of a material involves a __________ order reaction.
Options
A. third
B. second
C. first
D. zero
Show Answer
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Discuss
Correct Answer: first
7. The critical mass of a fissionable material can be reduced by
Options
A. heating it.
B. cooling it.
C. surrounding it by neutron reflecting material.
D. surrounding it by neutron absorbing material.
Show Answer
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Discuss
Correct Answer: surrounding it by neutron reflecting material.
8. In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous
Options
A. uranium oxide
B. uranium hexaflouride
C. uranium carbide
D. uranium sulphate
Show Answer
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Correct Answer: uranium hexaflouride
9. Uranium percentage in monazite sand is about
Options
A. 0.01
B. 0.25
C. 1.2
D. 7
Show Answer
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Discuss
Correct Answer: 0.25
10. Pick out the wrong statement.
Options
A. Isotopes have the same number of protons & electrons, but different number of neutrons.
B. Hydrogen has two isotopes.
C. In ordinary hydrogen,
1
H
1
and
1
H
2
are present in the ratio 6400:1.
D. none of these.
Show Answer
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Discuss
Correct Answer: Hydrogen has two isotopes.
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