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The mass number of an element is not changed, when it emits _______________ radiations?
Related MCQs
The half life period of a radioactive element depends upon the__________?
The half life period of a radioactive element depends on its __________?
Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage?
H2 is a better coolant than CO2, due to it‟s relatively__________?
Which of the following accounts for the maximum energy release in the nuclear fission process ?
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?
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous __________?
Enrichment of uranium is done to increase the concentration of __________ in the natural uranium?
A pressurised water reactor (PWR) uses pressurised water as a__________?
Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission?
Hydrogen has __________ isotopes?
Which of the following is not used as a moderator in nuclear reactor ?
Which is not a fissile nuclear material ?
Fast breeder reactors are most usable in India, because of our largest __________ deposits?
An electron has a mass that is approximately __________ that of the proton?
Which of the following reactors is operated at high neutron flux and low power level ?
Absorption/scattering cross-section of an element is expressed in “barn”, which is equivalent to__________?
Isotopes of an element have different__________?
Thorium metal__________?
Which of the following isotopes is not present in natural uranium?
U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent?
Thorium-232 is converted into uranium-233 in a/an __________ nuclear reactor?
Nuclides having the same atomic numbers are termed as__________?
The size of an atom is of the order of one __________?
The atomic mass of an element is fractional, because __________?
“Critical mass” is the minimum mass of nuclear fissile material required for the__________?
The atomic number of an element is equal to the number of __________ present in its atom?
Radioactive decay is a __________ change?
The mass number of an element is equal to the number of __________ in the nucleus?
__________ have the same mass number, but different nuclear charge ?
Energy produced in the nuclear fission is of the order of __________ MeV?
Which is the most commonly used molten metal for cooling of nuclear reactors ?
Percentage of the heavy water in ordinary water is around __________?
The 92U238 emits an a-particle. The product is__________?
Coolant used in a boiling water reactor is__________?
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is __________?
A radioactive substance does not emit__________?
Thermal shield is used in high powered nuclear reactors to__________?
Commercial power generation from fusion reactor is not yet possible, because__________?
Molten sodium (as a coolant in fast breeder reactor) ?
Out of the following, nucleus of __________ atom contains the largest number of neutrons?
The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent?
Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays?
Which of the following is a moderating material used in nuclear reactor ?
Uranium percentage in monazite sand is about__________?
The main ore of thorium is__________?
Fuel for a fast breeder reactor is__________?
Fast breeder reactors do not__________?
Quantity of fissionable material (i.e. U-235) in natural uranium is __________ percent?
Extraction of uranium from its ore is done using __________ methods?
The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about __________ metres/second?
The mass number of an element is not changed, when it emits _______________ radiations?
A. α & β
B. β & γ
C. γ & α
D. α, β, & γ
Correct Answer:
β & γ
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Last Updated:
March 07, 2019