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प्रश्न
Give a scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
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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.
State whether the fission of uranium-235 is caused by low energy neutrons or high energy neutrons.
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?
The following question are about the nuclear reactor of a power plant.
Which isotope of uranium produces the energy in the fuel rods?
The following question are about the nuclear reactor of a power plant.
What is the function of boron rods in the nuclear reactor?
Which produces more energy : nuclear fusion or nuclear fission?
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
One atomic mass unit (u) is equivalent to an energy of:
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 heat energy released during nuclear fission and fusion is due to the:
(a) conversion of stored chemicals into energy
(b) conversion of momentum into energy
(c) conversion of mass into energy
(d) conversion of magnetism into 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:
(i) an atom bomb,
List any four characteristics of a good fuel.
Explain with a diagram the step-by-step energy conversion in a nuclear power plant.
A radioactive nucleus undergoes a series of decays according to the sequence
\[\ce{X->[β] X1->[α] X2->[α]X3}\]
If the mass number and atomic number of X3 are 172 and 69 respectively, what is the mass number and atomic number of X?
The nucleus 84X202emits an alpha particle and forms the nucleus Y. Represent this change in the form of an equation.
A certain nucleus X has a mass number 14 and atomic number 6. The nucleus X changes to `"_7Y^14` after the loss of a particle. Name the particle emitted.
Which is the process used to harness nuclear energy these days? Explain it briefly.
Discuss problems associated with nuclear power generation.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
