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प्रश्न
The disposal of nuclear waste safely is a big challenge before scientists.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
The calorific values of five fuels A, B, C, D and E are given below:
| A | 48KJ/g |
| B | 17KJ/g |
| C | 150KJ/g |
| D | 50KJ/g |
| E | 30KJ/g |
State the disadvantages of nuclear energy.
The following question are about the nuclear reactor of a power plant.
What is the purpose of using the graphite moderator?
Which of the two, nuclear fusion and nuclear fusion, is made use of:
(1) for the production of electricity?
(2) for making a hydrogen bomb?
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
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
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,
Explain why, in a nuclear reactor, the chain reaction stops if the control rods are fully inserted into the graphite.
Give scientific reasons:
It is absolutely necessary to control the fission reaction in nuclear power plants.
What do you understand by radioactive decay? An isotope of Uranium `""_92^238 "U"` is radioactive and changes into Thorium 92 by the emission of an alpha particle. Write a symbolic equation for this decay process.
What will an alpha particle change into when it absorb two electrons.
An atomic nucleus A is composed of 84 protons and 128 neutrons. It emits an α-particle and is transformed into nucleus B. Write down the composition of B.
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 briefly what changes take place within the nuclei when beta particles are emitted by a radioactive substance.
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. A radioactive substance is oxidized. What change would you expect to take place in the nature of its radioactivity? Give a reason for your answer.
In nuclear power plants, neutrons are bombarded on atoms of __________.
Hydroelectric power station : Water stored in dams : : Nuclear power station : ____________
In nuclear power plants, turbines working on solar panels are used.
Atomic power plant in Maharashtra is ______.
Copy and complete the nuclear reaction by filling in the blanks.
\[\ce{_92U^235 + _0n^1 -> _56Ba^{\underline{\phantom{....}}} + \underline{\phantom{..}}Kr^92 + 3 _0n^1}\]
