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- Question
In ?-decay of radioactive material, the ratio of neutron to proton
Options- A. increases.
- B. remains same.
- C. decreases.
- D. is unpredictable; may increase or decrease.
- Correct Answer
- decreases.
- 1. Nucleus of 92U235 contains __________ protons.
Options- A. 92
- B. 235
- C. 143
- D. 325 Discuss
- 2. One 'amu' is equivalent to
Options- A. 9.31 Mev
- B. 931 eV
- C. 931 MeV
- D. 931 J Discuss
- 3. Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.
Options- A. fuel elements
- B. operating personnels
- C. walls of the reactor
- D. none of these Discuss
- 4. Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is
Options- A. 3
- B. 235
- C. 200
- D. 92 Discuss
- 5. Unit of radioactivity is
Options- A. barn
- B. Fermi
- C. Angstrom
- D. Curie Discuss
- 6. A fast breeder reactor
Options- A. uses natural uranium as fuel.
- B. does not require a moderator.
- C. both (a) and (b).
- D. neither (a) nor (b). Discuss
- 7. The specific heats of three gaseous coolants namely H2, He and CO2 in the increasing order are
Options- A. CO2, He, H2
- B. CO2, H2, He
- C. H2, He, CO2
- D. H2, CO2, He Discuss
- 8. Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays.
Options- A. X
- B. ? and ?
- C. neutrons & gamma
- D. infrared Discuss
- 9. Percentage of the heavy water in ordi water is around
Options- A. 0.015
- B. 7.54
- C. 0.71
- D. 32.97 Discuss
- 10. Plutonium
Options- A. is recovered from spent fuel from thermal nuclear reactor.
- B. has much lower melting point (640°C ) compared to thorium (1690°C).
- C. both (a) and (b).
- D. neither (a) nor (b). Discuss
Nuclear Power Engineering problems
Search Results
Correct Answer: 92
Correct Answer: 931 MeV
Correct Answer: operating personnels
Correct Answer: 3
Correct Answer: Curie
Correct Answer: does not require a moderator.
Correct Answer: CO2, He, H2
Correct Answer: neutrons & gamma
Correct Answer: 0.015
Correct Answer: both (a) and (b).
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