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प्रश्न
Write the merits of nuclear energy.
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उत्तर
A nuclear power plant does not use fossil fuel like coal. Therefore, problems like air pollution do not arise.
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संबंधित प्रश्न
One of the following is not a characteristic of a good fuel. This is:
(a) high calorific value
(b) no emission of smoke
(c) smooth burning
(d) high ignition temperature
Fill in the following blank with suitable word:
Nuclear .......... is used in nuclear power stations for the production of electricity.
What is nuclear fusion? Explain with an example. Write the equation of the reaction involved.
Write Einstein's mass-energy equation. Give the meaning of each symbol which occurs in it.
The following question are about the nuclear reactor of a power plant.
What is the function of boron rods in the nuclear reactor?
Differentiate between nuclear fission and nuclear fusion.
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`
Name the process represented by this equation and describe what takes place
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:
a hydrogen bomb?
Explain why, in a nuclear reactor, the chain reaction stops if the control rods are fully inserted into the graphite.
Which of the following statements are correct?
Electrons have
Write down the Einstein's mass-energy equivalence relation, explaining the meaning of each symbol used in it.
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.
What are beta rays and gamma rays?
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.
Complete the following fission reaction:
\[\ce{_92U^235 _0n^1 -> _aSb^133 + _41Co^b + 4_0n_1 + energy}\]
Write down the values of a and b.
Which substance is used as fuel in nuclear power plants?
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Copy and complete the nuclear reaction by filling in the blanks.
\[\ce{_92U^235 + _0n^1 -> _56Ba^{\underline{\phantom{....}}} + \underline{\phantom{..}}Kr^92 + 3 _0n^1}\]
