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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
Which of the following is not an example of a bio-mass energy source?
Compare and contrast bio-mass and hydro electricity as sources of energy.
State one use of nuclear fission reactions.
Fill in the following blank with suitable word:
Nuclear .......... is used in nuclear power stations for the production of electricity.
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
What does E represent?
A nuclear power plant is working normally. What would you do if the reactor core suddenly got too hot?
Name the process used to harness nuclear energy these days. Explain it briefly. List two advantages of using nuclear energy in place of fossil fuels.
What is the meaning of mass number?
What is a.m.u?
State, giving reason, whether the following nuclear decay is allowed or not?
\[\ce{_Z^AX -> _Z^AQ + γ}\]
How does the position of an element change in the periodic table when it emits out an alpha particle?
What happens to the atomic number of an element when it emit a beta particle.
The nucleus B emit a β-particle and is transformed into nucleus C. What is the composition of C?
A certain nucleus X has a mass number 15 and atomic number 7. Find the number of neutrons. The nucleus X losses one α-particle and Express the change and write the symbol of the new nucleus.
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
Do all isotopes have the same number of neutrons?
When a neutron is bombarded on an atom of uranium, ____________ neutrons generated in this process.
Thermal power generation : Air pollution : : Nuclear power generation : _____________
Which substance is used as fuel in nuclear power plants?
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
