Discussion
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- Question
Thermal neutrons which are used to cause the fission of U-235 have energy __________ eV.
Options- A. < 0.025
- B. > 1
- C. 1-25
- D. > 200.
- Correct Answer
- < 0.025
- 1. If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.
Options- A. 5
- B. 10
- C. 20
- D. 30 Discuss
- 2. The most commonly used nuclear fuel in boiling water reactor is
Options- A. enriched uranium
- B. natural uranium
- C. plutonium
- D. monazite sand Discuss
- 3. Graphite is used in nuclear reactor as
Options- A. insulation lining of the reactor.
- B. fuel.
- C. lubricant.
- D. retarder of neutron velocity. Discuss
- 4. How many atoms are present in one gm-atom of an element?
Options- A. 2 x 1023
- B. 6 x 1023
- C. 6 x 1032
- D. 5 x 105 Discuss
- 5. Which one is different for the neutral atoms of the isotopes of an element?
Options- A. Atomic weights
- B. Atomic numbers
- C. Number of protons
- D. Number of electrons Discuss
- 6. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).
Options- A. 15
- B. 45
- C. 65
- D. 85 Discuss
- 7. Uranium ore is currently mined & concentrated at
Options- A. Jadugoda
- B. Ghatsila
- C. Khetri
- D. Alwaye Discuss
- 8. Fuel for a nuclear reactor (thermal) is
Options- A. uranium
- B. plutonium
- C. radium
- D. none of these Discuss
- 9. Absorption/scattering cross-section of an element is expressed in "barn", which is equivalent to
Options- A. 10-24 cm2
- B. 10-12 cm
- C. 1 Angstrom
- D. 10-24 cm Discuss
- 10. The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about __________ metres/second.
Options- A. 1100
- B. 2200
- C. 3300
- D. 4400 Discuss
Nuclear Power Engineering problems
Search Results
Correct Answer: 10
Correct Answer: enriched uranium
Correct Answer: retarder of neutron velocity.
Correct Answer: 6 x 1023
Correct Answer: Atomic weights
Correct Answer: 85
Correct Answer: Jadugoda
Correct Answer: uranium
Correct Answer: 10-24 cm2
Correct Answer: 2200
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