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प्रश्न
In nuclear power plants, the chain reaction cannot be controlled.
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
What are the characteristics of an ideal fuel (or good fuel)?
Arrange the following fuels in the order of increasing calorific values (keeping the fuel with lowest calorific value first):
LPG, Coal, Alcohol, Dung cakes, Diesel
State one use of nuclear fission reactions.
State the disadvantages of nuclear energy.
How much is this energy in MeV? (Speed of light = 3 × 108 m/s)
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
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
Identify the particle c and the number x of such particles produced in the reaction.
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
Name the process represented by this equation and describe what happens during this reaction.
List any four characteristics of a good fuel.
Assertion (A): In the process of nuclear fission, the amount of nuclear energy generated by the fission of an atom of uranium is so tremendous that it produces 10 million times the energy produced by the combustion of an atom of carbon from coal.
Reason (R): The nucleus of a heavy atom such as uranium, when bombarded with low energy neutrons, splits apart into lighter nuclei. The mass difference between the original nucleus and the product nuclei gets converted to tremendous energy.
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`?
What changes will take place in the mass number and atomic number of the nucleus Y if it emits gamma radiations?
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.
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.
A nucleus of an element has the symbol 84P202, and emits an α-particle and then a β-particle. The final nucleus is bQa Find a and b.
Explain, why nuclear fusion is not being used to meet day to day energy needs.
Nuclear power plants in India
Write the demerits of a nuclear energy plant.
What are the places in which atomic power stations located in Tamil Nadu?
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
