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प्रश्न
The disposal of nuclear waste safely is a big challenge before scientists.
पर्याय
True
False
उत्तर
True
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संबंधित प्रश्न
Of what material are the control rods of a nuclear reactor made?
With the help of a labelled diagram, describe the working of a nuclear power plant
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
The energy produced by converting 1 gram mass of a nuclear fuel into energy completely is:
(a) 9 × 1016 J
(b) 9 × 1014 J
(c) 9 × 1015 J
(d) 9 × 1013 J
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.
List any four characteristics of a good fuel.
Make the correct choices in the following:
(a) In one atom of copper (mass number 63, atomic number 29) there are
Name the following nuclear reaction:
\[\ce {^3_1H + ^2_1H -> ^4_2He + ^1_0n + γ}\]
State, giving reason, whether the following nuclear decay are allowed or not?
\[\ce{_Z^AX ->_Z^{A-1}Y + _-1^0e}\]
What is the effect on the atomic mass and the atomic number of a radioactive element, after the emission of an α-particle?
State charge and mass of α-particle.
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. Represent this change in the form of an equation.
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
What is the number of protons in 92U238?
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Copy and complete the nuclear reaction by filling in the blanks.
\[\ce{_92U^235 + _0n^1 -> _56Ba^{\underline{\phantom{....}}} + \underline{\phantom{..}}Kr^92 + 3 _0n^1}\]
Why is nuclear fission useful to mankind?
