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- Question
An element having large number of __________ is most easily subjected to nuclear fission.
Options- A. protons
- B. electrons
- C. neutrons
- D. nucleons
- Correct Answer
- nucleons
- 1. The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?
Options- A. 159
- B. 1837
- C. 2537
- D. 10000 Discuss
- 2. Atoms of U-238 and U-235 differ in structure by three
Options- A. electrons and three protons
- B. protons
- C. neutrons
- D. electrons Discuss
- 3. ?-rays emission in radioactive disintegration is always accompanied by the emission of
Options- A. ?-rays
- B. ?-rays
- C. neutrons
- D. none of these Discuss
- 4. Out of the following, nucleus of __________ atom contains the largest number of neutrons.
Options- A. U-235
- B. U-238
- C. U-239
- D. Pu-239 Discuss
- 5. A control rod
Options- A. should have small absorption cross-section.
- B. is generally made of boron, hafnium or cadmium.
- C. should have large absorption cross-section.
- D. both (b) and (c). Discuss
- 6. The main purpose of control rod in a nuclear reactor is to control the
Options- A. chain reaction and hence the power output by regulating the number of secondary neutrons causing fission.
- B. emission of hazardous radiation.
- C. conversion of fissile material into fertile material.
- D. velocity of the secondary neutrons. Discuss
- 7. Heavy water (D2O) in a nuclear reactor serves as a
Options- A. coolant
- B. moderator
- C. both (a) & (b)
- D. neutron absorber Discuss
- 8. Which of the following is a non-fissile material?
Options- A. Plutonium-239
- B. Uranium-235
- C. Uranium-233
- D. Thorium-232 Discuss
- 9. 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
- 10. First experimental observation of nuclear fission was done by
Options- A. Plane
- B. Rutherford
- C. Fermi
- D. Hahn and Strassman Discuss
Nuclear Power Engineering problems
Search Results
Correct Answer: 1837
Correct Answer: neutrons
Correct Answer: ?-rays
Correct Answer: U-239
Correct Answer: both (b) and (c).
Correct Answer: chain reaction and hence the power output by regulating the number of secondary neutrons causing fission.
Correct Answer: both (a) & (b)
Correct Answer: Thorium-232
Correct Answer: Atomic weights
Correct Answer: Fermi
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