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प्रश्न
What is nuclear energy? Name the process used for producing electricity using the nuclear energy.
उत्तर १
When a heavy nucleus is bombarded with slow neutrons, it splits into two nearly equal light nuclei with a release of tremendous amount of energy. In this process of nuclear fission, the total sum of masses of products is less than the total sum of masses of reactants. This lost mass gets converted into energy. The energy so released is called nuclear energy.
Principle: The heat energy released due to the controlled chain reaction of nuclear fission of uranium-235 in a nuclear reactor is absorbed by the coolant which then passes through the coils of a heat exchanger containing water. The water in heat exchanger gets heated and converts into steam. The steam is used to rotate the turbine which in turn rotates the armature of a generator in a magnetic field and thus produces electricity.
उत्तर २
Nuclear energy is the energy released by the atom’s nucleus during a nuclear reaction. It is an exothermic process. The process of Nuclear fission is used to produce electricity.
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संबंधित प्रश्न
Of what material are the control rods of a nuclear reactor made?
Why are very high temperatures required for fusion to occur?
State the disadvantages of nuclear energy.
The following question are about the nuclear reactor of a power plant.
Why is liquid sodium (or carbon dioxide gas) pumped through the reactor?
How is the working nuclear reactor of a power plant shut down in an emergency?
Which of the following can be produced during the nuclear fission as well as nuclear fusion reactions?
(a) protons
(b) deutrons
(c) electrons
(d) neutrons
One type of energy which has not been controlled so far is:
(a) ocean thermal energy
(b) nuclear fusion energy
(c) geothermal energy
(d) nuclear fission energy
The mass numbers of four elements A, B, C and D are 2, 20, 135 and 235, respectively. Which one of them will be most suitable to make:
a hydrogen bomb?
Give scientific reason.
The construction of turbine is different for different types of power plants.
Distinguish between α, β and γ rays.
What is the source of energy of sun or stars?
The isotope of 92U235 decays by alpha emission to an isotope of Thorium (Th). The Thorium isotope decays by beta emission to an isotope of Protactaminum (Pa). Write down the equations to represent these two nuclear changes.
A radioactive carbon nucleus 6C14 emits a β-particle to form a nitrogen nucleus. Represent the change by an equation showing the atomic and mass number of each elements.
In the power plant based on nuclear energy, __________ is used to rotate the generator.
In nuclear power plants, neutrons are bombarded on atoms of __________.
Which substance is used as fuel in nuclear power plants?
Write a short note.
Nuclear Power Plant
In an atomic power station, nuclear energy is converted into electrical energy.
In atomic power station, ______ is used to rotate the turbine.
