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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
Name the moderator used in a nuclear reactor.
The following question are about the nuclear reactor of a power plant.
Why is liquid sodium (or carbon dioxide gas) pumped through the reactor?
In the nuclear reactor of a power plant:
how do control rods control the rate of fission?
The energy in the reactor of a nuclear power station is produced by the process of:
(a) nuclear diffusion
(b) nuclear fission
(c) nuclear fusion
(d) nuclear fermentation
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
Identify the particle c and the number x of such particles produced in the reaction.
What do you mean by nuclear energy? What is responsible for its release?
Write down the Einstein's mass-energy equivalence relation, explaining the meaning of each symbol used in it.
Name the following nuclear reaction:
\[\ce {^235_92U +^1_0n-> ^90_38Sr + ^143_54Xe + 3^1_0n + γ}\]
Name the following nuclear reaction:
\[\ce {^3_1H + ^2_1H -> ^4_2He + ^1_0n + γ}\]
What is nuclear energy? Name the process used for producing electricity using the nuclear energy.
Complete the following nuclear change:
\[\ce{^24_11 Na -> ...Mg.... + ^0_-1β}\]
What changes occur in the nucleus of a radioactive element when it emits an alpha particle? Show by an example?
Explain briefly what changes take place within the nuclei when beta particles are emitted by a radioactive substance.
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.
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. A radioactive substance is oxidized. What change would you expect to take place in the nature of its radioactivity? Give a reason for your answer.
Complete the following nuclear changes:
\[\ce {^238_92 P ->\underset{-}-{Q} + ^4_2He->\underset{-}-{R} + ^0_-1e}\]
Atomic power plant in Maharashtra is ______.
Which source of electricity generation is least harmful to the environment?
Give a scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
