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Nuclear Power Engineering
Comments
Question
Nuclides having the same atomic numbers are termed as
Options
A. isotopes
B. isomers
C. isotones
D. isobars
Correct Answer
isomers
Nuclear Power Engineering problems
Search Results
1. Atoms with same number of neutrons, but different number of nucleons are called
Options
A. isotones
B. isobars
C. isotopes
D. isoters
Show Answer
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Discuss
Correct Answer: isotones
2. Percentage of U-238 in natural uranium is around
Options
A. 0.71
B. 99.29
C. 0.015
D. 29.71
Show Answer
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Discuss
Correct Answer: 99.29
3. Which is a fertile nuclear fuel?
Options
A. U-233
B. U-235
C. Pu-239
D. Th-232
Show Answer
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Discuss
Correct Answer: Th-232
4. Thorium metal
Options
A. resembles steel in appearance.
B. is less hard (in the range of silver).
C. is highly ductile.
D. all (a), (b) and (c).
Show Answer
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Correct Answer: all (a), (b) and (c).
5. Which one is radioactive in nature?
Options
A. Helium
B. Deuterium
C. Heavy hydrogen
D. Tritium
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Correct Answer: Tritium
6. silicon carbide refractories have very low
Options
A. refractoriness (< 1700°C).
B. thermal conductivity.
C. resistance to thermal shock.
D. none of these.
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Discuss
Correct Answer: none of these.
7. Cold crushing strength of ordinary fireclay brick is about 950 kg/cm
2
. On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm
2
.
Options
A. 450
B. 250
C. 150
D. 65
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Correct Answer: 65
8. Which of the following is not a neutral refractory?
Options
A. Silicon carbide
B. Magnesite
C. Chromite
D. Graphite
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Correct Answer: Magnesite
9. Silica refractories
Options
A. crack when subjected to sudden change of temperature.
B. can not be used in the dome of hot blast stoves.
C. have lower thermal conductivity than fireclay bricks.
D. all (a), (b) and (c)
Show Answer
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Correct Answer: crack when subjected to sudden change of temperature.
10. With increase in the alumina content in firebricks, its fusion point (refractoriness)
Options
A. decreases linearly
B. remains unchanged
C. increases
D. decreases
Show Answer
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Correct Answer: increases
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