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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
What are the advantages of nuclear energy?
State whether the fission of uranium-235 is caused by low energy neutrons or high energy neutrons.
Name the type of nuclear reaction which is involved in the working of:
an atom bomb.
What is nuclear fission? Explain with an example. Write the equation of the nuclear reaction involved.
Which of the following is used as a moderator in the reactor of a nuclear power station?
(a) liquid sodium
(b) boron
(c) graphite
(d) carbon dioxide
In a nuclear power plant, coolant is a substance:
(a) which cools the hot, spent steam to condense it back to water
(b) which transfers heat from reactor to water in heat exchanger
(c) which is boiled to make steam to turn the turbine
(d) which cools the generator coils to prevent their overheating.
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
State two conditions under which such a reaction takes place.
Give scientific reasons.
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.
Which of the following statements are correct?
Electrons have
Which one of the following statements about alpha and beta particles is
correct?
What changes will take place in the mass number and atomic number of the nucleus Y if it emits gamma radiations?
State the energy conversion taking place in a solar cell.
The disposal of nuclear waste safely is a big challenge before scientists.
Define.
Nuclear fission
In atomic power station, ______ is used to rotate the turbine.
When neutron is bombarded on atom of Uranium-235, it absorbs the neutron and converts into ______.
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.
