The radioisotope used to study the thyroid gland is
Which one is different for the neutral atoms of the isotopes of an element ?
A fast breeder reactor
Coolant used in a fast breeder reactor is
Percentage of U-in natural uranium is around
A moderator __________ the neutrons.
Nuclides having the same atomic numbers are termed as
Use of molten metal as a coolant in fast breeder reactor helps in
The function of moderators in nuclear reactor is to
Thermal shield is used in high powered nuclear reactors to
Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.
Which is a fertile nuclear fuel ?
The half life period of a radioactive element depends on its
The main ore of thorium is
The ratio of mass of a neutron to that of an electron is aboutWhat is the ratio of the mass of a proton to that of an electron?
First experimental observation of nuclear fission was done by
Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm2 .
The main ore of uranium is
A radioactive isotope undergoes decay with respect to time following __________ law.
Atoms of U-and U-differ in structure by three
Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014 neutrons/cm2 second.
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous
Fuel for a nuclear reactor (thermal) is
Thermal neutrons which are used to cause the fission of U-have energy __________ eV.
Thorium can be converted into U-in a __________ reactor.
The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235 , followed by nuclear fission is
What is the average life of a radioactive atom having a 'half life period' of T ?
Specific gravity of uranium and plutonium is about
The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
Atoms with same number of neutrons, but different number of nucleons are called