Discussion
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- Question
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
- Correct Answer
- 6 x 1023
- 1. 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
- 2. Thorium can be converted into U-233 in a __________ reactor.
Options- A. liquid metal cooled
- B. fast breeder
- C. thermal
- D. swimming pool Discuss
- 3. Thermal shield is used in high powered nuclear reactors to
Options- A. protect the walls of the reactor from radiation damage.
- B. absorb the fast neutrons.
- C. slow down the secondary neutrons.
- D. protect the fuel element from coming in contact with the coolant. Discuss
- 4. The half life period of a radioactive element depends on its
Options- A. temperature
- B. pressure
- C. amount
- D. none of these Discuss
- 5. __________ have the same mass number, but different nuclear charge.
Options- A. Isotopes
- B. Isobars
- C. Isotones
- D. none of these Discuss
- 6. Graphite is used in nuclear reactor as
Options- A. insulation lining of the reactor.
- B. fuel.
- C. lubricant.
- D. retarder of neutron velocity. Discuss
- 7. The most commonly used nuclear fuel in boiling water reactor is
Options- A. enriched uranium
- B. natural uranium
- C. plutonium
- D. monazite sand Discuss
- 8. 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
- 9. 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. Discuss
- 10. 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
Nuclear Power Engineering problems
Search Results
Correct Answer: Atomic weights
Correct Answer: fast breeder
Correct Answer: protect the walls of the reactor from radiation damage.
Correct Answer: none of these
Correct Answer: Isobars
Correct Answer: retarder of neutron velocity.
Correct Answer: enriched uranium
Correct Answer: 10
Correct Answer: < 0.025
Correct Answer: 85
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