A. Barn
B. Fermi
C. Angstrom
D. Curie
Correct Answer: Curie ✔
Last Updated: March 07, 2019
Related MCQs
- Gas cooling as compared to water cooling of nuclear reactors__________?
- Which of the following nuclear materials is fissile ?
- The ratio of atomic radius to its nuclear radius is about__________?
- Isotopes of an element have different__________?
- A moderator __________ the neutrons?
- The atomic number of a radioactive element is not changed, when it emits __________ rays?
- Extraction of uranium from its ore is done by __________ method?
- The most abundant isotope of natural uranium is __________?
- A boiling water reactor is the one, in which the__________?
- Heavy water (D2O) in a nuclear reactor serves as a__________?
- The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is__________?
- In a nuclear explosion, the energy is released primarily in the form of __________ energy?
- What is the average life of a radioactive atom having a ‘half life period’ of T ?
- In a pressurised water reactor (PWR), the__________?
- A fertile material is the one, which can be__________?
- In a homogeneous nuclear reactor, the __________ are mixed together?
- Heat is generated in a nuclear reactor (thermal) by__________?
- Molten sodium is used as a coolant in a fast breeder reactor, because of its__________?
- A homogeneous reactor is the one, in which the__________?
- The number of neutrons in the nucleus of Uranium-233 (92U233) is __________?
- Mass of a positron is same as that of a/an__________?
- The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be __________ of its original weight?
- An element having large number of __________ is most easily subjected to nuclear fission?
- One ‘amu’ is equivalent to__________?
- 75% of a radioactive element decays in 6 hours. Its half life period is __________ hours?
- Which of the following is not used as a nuclear fuel cladding material ?
- The radioisotope used to study the thyroid gland is__________?
- Sodium melts (at atmospheric pressure) at a temperature of __________ °C?
- A thermal nuclear reactor compared to a fast breeder reactor ?
- __________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?
- Which of the following radiations is the least penetrating ?
- Moderating material used in a thermal-reactor should be a __________?
- Atoms of U-238 and U-235 differ in structure by three__________?
- Nuclear fuel usually used in a Boiling Water Reactor (BWR) is__________?
- __________ moderator is used in a fast breeder reactor?
- Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec?
- A fast breeder reactor__________?
- Commercial power generation from fusion reactor is not yet possible, because__________?
- The main ore of uranium is __________?
- Pressure in a Pressurised Water Reactor (PWR) is used for __________?
- The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
- Hydrogen differs from deuterium in __________ properties?
- Which of the following is artificially produced as it does not occur in nature ?
- Neutrons have mass approximately equal to that of __________ atoms?
- The emission of an a-particle causes the resultant nucleus to have__________?
- Atoms with same number of neutrons, but different number of nucleons are called__________?
- Percentage of heavy water in ordinary water is around__________?
- Ordinary water is not used as a moderator because, it__________?
- First experimental observation of nuclear fission was done by __________?
- The phenomenon of radioactivity was discovered by__________?
- Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235?