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प्रश्न
Write the problems associated with hydroelectric power projects.
Write two problems associated with hydroelectric power plant.
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उत्तर
- The back-water due to storage of water in a dam may submerge villages or towns in that area. This leads to the problems of rehabilitation of the displaced population. Moreover, this can also submerge forests as well as fertile land.
- The obstruction of the flow of river water may have an adverse effect on the living world in the river.
संबंधित प्रश्न
The calorific value and ignition temperature of fuel A are 55 kJ/g and 80°C, respectively. These values for fuel B are 80 kJ/g and 10°C, respectively. On burning, the fuel A produces CO2 and H2O while the fuel B produces CO2 , CO and SO2. Give three points of relative and disadvantages of these two fuels.
Which one of the following is not renewable energy technology?
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.
If 25 atomic mass units (u) of a radioactive material are destroyed in a nuclear reaction, how much energy is released in MeV?
The following question are about the nuclear reactor of a power plant.
What is the purpose of using the graphite moderator?
What are the advantages and disadvantages of using nuclear fuel for generating electricity?
One atomic mass unit (u) is equivalent to an energy of:
The heat energy released during nuclear fission and fusion is due to the:
(a) conversion of stored chemicals into energy
(b) conversion of momentum into energy
(c) conversion of mass into energy
(d) conversion of magnetism into energy
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?
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.
Explain with diagram step-by-step energy conversion in Nuclear Power Plant.
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 is the source of energy of sun or stars?
Explain, why nuclear fusion is not being used to meet day to day energy needs.
In the power plant based on nuclear energy, __________ is used to rotate the generator.
The disposal of nuclear waste safely is a big challenge before scientists.
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.
