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प्रश्न
Why are control rods used in nuclear reactors?
उत्तर
In the nuclear reactor, nuclear fission of nuclei to atoms like uranium or plutonium occurs. Control rods are used to speed up or slow down the chain reaction.
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संबंधित प्रश्न
What are the advantages of nuclear energy?
The fuel having a calorific value of 55 kJ/g is likely to be:
(a) biogas
(b) methane gas
(c) hydrogen gas
(d) natural gas
What are the advantages and disadvantages of using nuclear fuel for generating electricity?
The energy in the reactor of a nuclear power station is produced by the process of:
(a) nuclear diffusion
(b) nuclear fission
(c) nuclear fusion
(d) nuclear fermentation
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What type of bomb is based on similar type of reaction?
Explain with diagram step-by-step energy conversion in Nuclear Power Plant.
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Neutrons have
Which one of the following statements about alpha and beta particles is
correct?
What is the source of energy of sun or stars?
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 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.
State, giving reason, whether the following nuclear decay is allowed or not?
\[\ce{_Z^AX -> _Z^AQ + γ}\]
What will an alpha particle change into when it absorb one electron.
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Draw a simplified labelled diagram of a hot cathode ray tube.
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
Do all isotopes have the same number of neutrons?
In nuclear power plants, the chain reaction cannot be controlled.
Define.
Nuclear fission
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
