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प्रश्न
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reasons.
It is essential to control the process of nuclear fission in a nuclear power plant.
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उत्तर
- Nuclear fission is a chain reaction.
- In a nuclear power plant, this chain reaction must be carefully controlled.
- If the reaction is not controlled, a large number of neutrons will be produced rapidly.
- These neutrons can cause the fission of more uranium 235 nuclei, leading to an uncontrolled increase in the reaction rate.
- Such uncontrolled chain reactions can release an enormous amount of energy in a very short time and may result in serious accidents.
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संबंधित प्रश्न
What is a fuel? Give five examples of fuels.
Which particles bring about the fission of uranium-235?
Name the type of nuclear reaction which is involved in the working of:
an atom bomb.
Name the moderator used in a nuclear reactor.
Of what material are the control rods of a nuclear reactor made?
What do you think is the purpose of the thick, concrete chamber surrounding the reactor of a nuclear power plant?
What will happen if slow moving neutrons are made to strike the atoms of a heavy element `''235_92U`? What is the name of this process?
Name one installation where such a process is utilised.
The following question are about the nuclear reactor of a power plant.
Which isotope of uranium produces the energy in the fuel rods?
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 disposal of waves produced in a nuclear power plant poses a big problem because it is:
(a) too heavy
(b) highly inflammable
(c) extremely foul smelling
(d) highly radioactive
Explain why, in a nuclear reactor, the chain reaction stops if the control rods are fully inserted into the graphite.
Which of the following statements are correct?
Electrons have
What is the meaning of mass number?
Write the approximate mass of a proton, neutron and electron in a.m.u.
What is the source of energy of sun or stars?
The nucleus of an atom does not contain electrons. Explain how is it possible for the nucleus to emit a beta particle which is fast moving electron.
Nuclear power plants in India
The disposal of nuclear waste safely is a big challenge before scientists.
