Power Plant Questions and Answers – Radioactive Decay & Half Life – II

This set of Power Plant Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Radioactive Decay & Half Life – II”.

1. Commercial power generation from fusion reactor is not yet possible, because __________
a) it is hard to control fission
b) it is hard to initiate fission
c) it is a non-periodic process
d) none of the mentioned
View Answer

2. First experimental observation of nuclear fission was done by __________
a) Rutherford
b) Hahn & Strassman
c) Plane
d) Fermi
View Answer

3. Function of control rod in a nuclear reactor is to control __________
a) pressure
b) temperature
c) fuel consumption
d) absorption of neutrons
View Answer

4. “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
View Answer

5. Which of the following nuclear materials is fissile?
a) U-239
b) U-235
c) U-232
d) Pu-239
View Answer

6. Unit of Radioactivity is?
a) Curie
b) Angstrom
c) Fermi
d) Barn
View Answer

7. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is?
a) 4
b) 3
c) 2
d) 1
View Answer

8. Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.
a) less than
b) equal to
c) either more or less
d) more than
View Answer

9. Which is the main ore of uranium?
a) cassiterite
b) chalcopyrite
c) pitchblende
d) monazite sand
View Answer

10. Nucleus of tritium has how many neutrons?
a) 1
b) 2
c) 3
d) 4
View Answer

11. Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is?
a) 2
b) 1
c) 0.1
d) 12
View Answer

12. Coolant present in the primary circuit of a pressurised water reactor is high pressure __________
a) saturated steam
b) superheated steam
c) saturated water
d) sub cooled water
View Answer

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
View Answer

14. Extraction of uranium from its ore is done using __________ methods.
a) chemical
b) pyrometallurgical
c) electrometallurgical
d) physical benefaction
View Answer

15. Atoms of U-238 and U-235 differ in structure by three __________
a) electrons
b) protons
c) neutrons
d) electrons & three protons
View Answer

Sanfoundry Global Education & Learning Series – Power Plant Engineering.

To practice all areas of Power Plant Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.