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प्रश्न
What precautions must be taken for the safe disposal of nuclear waste?
उत्तर
The nuclear waste obtained from laboratories, hospitals, scientific establishments or power plants must be first kept in thick casks and then they should buried in the specially designed deep underground stores. The stores should be make quite far from the populated area and the casks should also be buried and scaled in useless mines after storing if.
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संबंधित प्रश्न
Arrange the following fuels in the order of decreasing calorific values (keeping the fuel with highest calorific value first):
Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane
Fill in the following blank with suitable word:
In a nuclear power station, nuclear fission takes place in the .............
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?
Which of the following is used as a moderator in the reactor of a nuclear power station?
(a) liquid sodium
(b) boron
(c) graphite
(d) carbon dioxide
Nuclear fission reactions are not a source of energy for one of the following. This is:
(a) atom bomb
(b) power plants
(c) sun
(d) pacemaker
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
Name one installation where the above nuclear reaction is utilised.
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.
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.
Draw a simplified labelled diagram of a hot cathode ray tube.
A certain nucleus X has a mass number 15 and atomic number 7. Find the number of neutrons. The nucleus X losses one α-particle and Express the change and write the symbol of the new nucleus.
