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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
Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy?
What is a fuel? Give five examples of fuels.
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
Name the type of nuclear reaction which is involved in the working of:
a hydrogen bomb.
Where, in a nuclear power station, is uranium used up?
What is nuclear fusion? Explain with an example. Write the equation of the reaction involved.
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?
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
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
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
What type of nuclear bomb is based on similar reactions?
Explain why, in a nuclear reactor, the chain reaction stops if the control rods are fully inserted into the graphite.
Give scientific reason.
The construction of turbine is different for different types of power plants.
Give scientific reasons:
It is absolutely necessary to control the fission reaction in nuclear power plants.
An imaginary radioactive element `"_92X^235` decays to form X1; X2; X3; X4; X5 and X6 nuclides, by ejecting two β-particles, followed by α-particles and again two β-particles, followed by α-particle. Represent the various nuclear changes in the form of an equation. State the mass number and atomic number of X6. List the isotopes and isobars in the above nuclear equation.
State charge and mass of α-particle.
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.
What precautions must be taken for the safe disposal of nuclear waste?
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.
Hydroelectric power station : Water stored in dams : : Nuclear power station : ____________
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
