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- Question
Which is the most commonly used molten metal for cooling of nuclear reactors?
Options- A. Calcium
- B. Sodium
- C. Mercury
- D. Zinc
- Correct Answer
- Sodium
- 1. The largest stable nucleus is
Options- A. U-235
- B. U-238
- C. Pb-206
- D. Bi-209 Discuss
- 2. A boiling water reactor is the one, in which the
Options- A. coolant water is allowed to boil in the core of the reactor.
- B. coolant water, after being heated in the reactor core, generates steam in a boiler.
- C. pressurised water is pumped into the core.
- D. fuel and the coolant are thoroughly mixed to form a homogeneous solution. Discuss
- 3. Ordinary water is not used as a moderator because, it
Options- A. has a low absorption cross-section.
- B. has a low scattering cross-section.
- C. absorbs neutrons.
- D. does not absorb neutrons. Discuss
- 4. Final product of uranium extraction plant at Jadugoda (Bihar) is
Options- A. uranium
- B. uranium oxide
- C. uranium carbide
- D. magnesium diuranate Discuss
- 5. The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.
Options- A. 24
- B. 18
- C. 6
- D. 36 Discuss
- 6. The decay product of tritium (a beta emitter) is
Options- A. lithium
- B. helium
- C. deuterium
- D. hydrogen Discuss
- 7. Which of the following may be used to measure the rate of nuclear disintegration?
Options- A. Geiger-Muller Counter
- B. Cyclotron
- C. Cold chamber
- D. Mass spectrograph Discuss
- 8. "Critical mass" is the minimum mass of nuclear fissile material required for the
Options- A. sustainment of chain reaction.
- B. power generation on commercial scale.
- C. economic power generation.
- D. none of these. Discuss
- 9. A nuclear reactor can't be used for
Options- A. the production of radioisotopes.
- B. supplying intense fields or beams of neutron for scientific experiments.
- C. marine ship propulsion.
- D. none of these. Discuss
- 10. A homogeneous reactor is the one, in which the
Options- A. fissile atoms are evenly distributed throughout the mass of nuclear reactor.
- B. same substance (e.g. heavy water) is used as moderator & coolant.
- C. the fuel and the moderator is mixed to form a homogeneous material.
- D. all (a), (b) and (c). Discuss
Nuclear Power Engineering problems
Search Results
Correct Answer: U-235
Correct Answer: coolant water is allowed to boil in the core of the reactor.
Correct Answer: absorbs neutrons.
Correct Answer: magnesium diuranate
Correct Answer: 18
Correct Answer: helium
Correct Answer: Geiger-Muller Counter
Correct Answer: sustainment of chain reaction.
Correct Answer: none of these.
Correct Answer: the fuel and the moderator is mixed to form a homogeneous material.
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