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प्रश्न
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
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उत्तर
- Nuclear fission is a chain reaction.
- In a nuclear power plant, this chain reaction must be carefully controlled.
- If the reaction is not controlled, a large number of neutrons will be produced rapidly.
- These neutrons can cause the fission of more uranium-235 nuclei, leading to an uncontrolled increase in the reaction rate.
- Such uncontrolled chain reactions can release an enormous amount of energy in a very short time and may result in serious accidents.
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संबंधित प्रश्न
Name the type of nuclear reaction which is involved in the working of:
an atom bomb.
The following question are about the nuclear reactor of a power plant.
Will the fuel rods last for ever?
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 produces more energy : nuclear fusion or nuclear fission?
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
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
What type of bomb is based on similar type of reaction?
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.
A nuclear reactor has half the length of all its control rods inserted in graphite. What must be done so that the reactor produces more heat? Explain your answer.
Explain why, in a nuclear reactor, the chain reaction stops if the control rods are fully inserted into the graphite.
A nucleus `"_11Na^24` emits a beta particle to change into Magnesium (Mg).
(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name `"_12^24Mg` with respect to `"_11^24Na`?
What is nuclear waste? What are hazard of nuclear waste to living beings? How is nuclear waste disposed off?
Hydroelectric power station : Water stored in dams : : Nuclear power station : ____________
Analogy:
Kayatharu in Tirunelveli district:: Windmills.
Koodankulam in Tirunelveli district:: ______.
Discuss problems associated with nuclear power generation.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Name the nuclear radiation which has the highest ionizing power.
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
