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प्रश्न
Why are control rods used in nuclear reactors?
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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
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
Name the type of nuclear reaction which is involved in the working of:
an atom bomb.
Fill in the following blank with suitable word:
Nuclear .......... is used in nuclear power stations for the production of electricity.
What is the source of energy of the sun and other stars?
The following question are about the nuclear reactor of a power plant.
What is the function of boron rods in the nuclear reactor?
The 'coolants' which can be used in the reactor of a nuclear power station are:
(a) liquid mercury and nitrogen dioxide
(b) liquid sodium and carbon dioxide
(c) liquid ammonia and carbon monoxide
(d) liquid boron and uranium oxide
One eV (electron volt) of nuclear energy is equivalent of:
(a) 1.6 × 10−14 J
(b) 1.6 × 10−12 J
(c) 1.6 × 10−19 J
(d) 1.6 × 10−13 J
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
Name the process represented by this equation and describe what takes place
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
What type of nuclear bomb is based on similar reactions?
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,
An element P has an atomic mass of 239 and an atomic number of 92. It
emits a beta particle forming an element Q. Q can be represented by
What do you mean by nuclear energy? What is responsible for its release?
What is the source of energy of sun or stars?
A nucleus `"_11Na^24` emits a beta particle to change into Magnesium (Mg).
(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name `"_12^24Mg` with respect to `"_11^24Na`?
State charge and mass of β-particle.
What happens to the atomic number of an element when it emits an alpha particle.
In nuclear power plants, neutrons are bombarded on atoms of __________.
Nuclear power plants in India
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
