MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The half-life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm. |
| A. | 1/2 |
| B. | 1/4 |
| C. | 1/8 |
| D. | 1/16 |
| Answer» E. | |
| 2. |
Which is the most commonly used molten metal for cooling of nuclear reactors? |
| A. | Zinc |
| B. | Sulphur |
| C. | Sodium |
| D. | Manganese |
| Answer» D. Manganese | |
| 3. |
In terms of speed, the newly produced neutrons are classed into how many types? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 4. |
The nuclear activity occurring in the radioisotope Radium 223 is? |
| A. | Alpha & Gamma emission |
| B. | Gamma & Beta Emission |
| C. | Beta emission |
| D. | None of the mentioned |
| Answer» B. Gamma & Beta Emission | |
| 5. |
One amu is equivalent to? |
| A. | 931 MeV |
| B. | 93.1 eV |
| C. | 9.31 eV |
| D. | 931 J |
| Answer» B. 93.1 eV | |
| 6. |
Enrichment of uranium is done to increase the concentration of __________ in the natural uranium |
| A. | U-235 |
| B. | U-233 |
| C. | U-238 |
| D. | PU-239 |
| Answer» B. U-233 | |
| 7. |
Which is a fertile nuclear fuel? |
| A. | U-233 |
| B. | U-235 |
| C. | Pu-239 |
| D. | Th-232 |
| Answer» E. | |
| 8. |
The half-life period of a radioactive element depends on its |
| A. | temperature |
| B. | pressure |
| C. | amount |
| D. | none of the mentioned |
| Answer» E. | |
| 9. |
The nuclear activity occurring in the radioisotope Barium 139 is? |
| A. | Alpha & Beta emission |
| B. | Gamma & Beta Emission |
| C. | Beta emission |
| D. | None of the mentioned |
| Answer» C. Beta emission | |
| 10. |
Which is radioactive in nature? |
| A. | Helium |
| B. | Deuterium |
| C. | Tritium |
| D. | Heavy Hydrogen |
| Answer» D. Heavy Hydrogen | |
| 11. |
Which of the following is not a naturally occurring nuclear fuel? |
| A. | Uranium-238 |
| B. | Thorium-233 |
| C. | Plutonium-239 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 12. |
Unit of Radioactivity is? |
| A. | Curie |
| B. | Angstrom |
| C. | Fermi |
| D. | Barn |
| Answer» B. Angstrom | |
| 13. |
Candu reactor is a __________ nuclear reactor. |
| A. | natural uranium fuelled heavy water cooled & moderated |
| B. | highly enriched uranium (85% U-235) fuelled |
| C. | homogeneous |
| D. | fast breeder |
| Answer» B. highly enriched uranium (85% U-235) fuelled | |
| 14. |
The nuclear activity occurring in the radioisotope Xenon 135 is? |
| A. | Alpha & Beta emission |
| B. | Gamma & Beta Emission |
| C. | Beta emission |
| D. | None of the mentioned |
| Answer» C. Beta emission | |
| 15. |
A radioactive isotope undergoes decay with respect to time following __________ law |
| A. | logarithmic |
| B. | exponential |
| C. | inverse square |
| D. | linear |
| Answer» C. inverse square | |
| 16. |
The decay product of tritium is? |
| A. | Hydrogen |
| B. | Deuterium |
| C. | Lithium |
| D. | Helium |
| Answer» C. Lithium | |
| 17. |
'Critical mass' is the minimum mass of nuclear fissile material required for the |
| A. | sustainment of chain reaction |
| B. | economic power generation |
| C. | power generation on commercial scale |
| D. | none of the mentioned |
| Answer» B. economic power generation | |
| 18. |
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. |
| A. | 10 |
| B. | 5 |
| C. | 20 |
| D. | 30 |
| Answer» B. 5 | |
| 19. |
Nucleus of tritium has how many neutrons? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 20. |
The velocity of a fast moving neutron is? |
| A. | 2 m/s |
| B. | 2.4 x 1010 m/s |
| C. | 4.4 x 1010 m/s |
| D. | 4.4 x 106 m/s |
| Answer» E. | |
| 21. |
Which of the following may not need a moderator? |
| A. | Candu Reactor |
| B. | Fast Breeder Reactor |
| C. | Homogeneous Reactor |
| D. | none of the mentioned |
| Answer» C. Homogeneous Reactor | |
| 22. |
The nuclear activity occurring in the radioisotope Krypton 87 is? |
| A. | Alpha emission |
| B. | Gamma Emission |
| C. | Beta emission |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |