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Chemical Engineering
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Nuclear Power Engineering
Comments
Question
Extraction of uranium from its ore is done by __________ method.
Options
A. chemical
B. pyrometallurgical
C. physical beneficiation
D. electrometallurgical
Correct Answer
chemical
Nuclear Power Engineering problems
Search Results
1. A pressurised water reactor (PWR) uses pressurised water as a
Options
A. coolant.
B. working fluid in power turbine.
C. moderator.
D. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: coolant.
2. Which of the following is the best nuclear fuel?
Options
A. N
p
- 239
B. U-234
C. P
u
-239
D. Th-236
Show Answer
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Discuss
Correct Answer: P
u
-239
3. Which of the following is present in Bhabha Atomic Research Centre (BARC) complex, Trombay (Bombay)?
Options
A. Power reactor
B. Research reactor
C. Fast breeder reactor
D. Heavy water plant
Show Answer
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Discuss
Correct Answer: Research reactor
4. 'Heavy water' is termed as 'heavy' because it is
Options
A. denser than water.
B. an oxide of deuterium.
C. a heavy liquid.
D. an oxide of heavier isotope of oxygen.
Show Answer
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Discuss
Correct Answer: an oxide of deuterium.
5. Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor?
Options
A. Molten sodium cooled
B. CO
2
gas cooled
C. Pressurised water
D. Boiling water
Show Answer
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Discuss
Correct Answer: Boiling water
6. 75% of a radioactive element decays in 6 hours. Its half life period is __________ hours.
Options
A. 3/4
B. 1/6
C. 3
D. 4
Show Answer
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Discuss
Correct Answer: 3
7. The atomic mass of an element is fractional, because
Options
A. of uncertainty principle.
B. it may have isobars.
C. it contains neutrons.
D. it may have isotopes.
Show Answer
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Discuss
Correct Answer: it may have isotopes.
8. Positron is a/an
Options
A. nucleus having two protons.
B. helium nucleus.
C. electron with positive charge.
D. nucleus with one proton and one neutron.
Show Answer
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Correct Answer: electron with positive charge.
9. 'Light water' used as a coolant in nuclear reactor is nothing but
Options
A. ordinary water.
B. mildly acidic (pH = 6) water.
C. mildly alkaline (pH = 8) water.
D. none of these.
Show Answer
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Correct Answer: ordinary water.
10. A radioactive substance does not emit
Options
A. ?-ray
B. proton
C. position
D. ?-ray
Show Answer
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Discuss
Correct Answer: proton
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