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प्रश्न
Write the problems associated with hydroelectric power projects.
उत्तर
Problems associated with hydroelectric power plant:
- Villages, towns, forests may submerge due to back-water caused by storage of water in dams. This leads to the forced migration of the living population in that area.
- The obstruction of the flow of river water may have an adverse effect on the living world in the river.
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संबंधित प्रश्न
Which one of the following is not renewable energy technology?
State one use of nuclear fission reactions.
What is the nuclear fuel in the sun ?
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Name one installation where such a process is utilised.
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(a) liquid mercury and nitrogen dioxide
(b) liquid sodium and carbon dioxide
(c) liquid ammonia and carbon monoxide
(d) liquid boron and uranium oxide
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?
One isotopes of uranium has a mass number of 235 and atomic number 92.
(a) What is the number of electrons in a neutral atom of this isotope?
(b) How many protons are there in the nucleus of this isotope?
(c) For another isotope of Uranium state which one of the numbers (238 or 92) changes?
(d) What is the number of protons in 238U?
Which one of the following statements about alpha and beta particles is
correct?
What do you mean by atomic number?
Name the following nuclear reaction:
\[\ce {^235_92U +^1_0n-> ^90_38Sr + ^143_54Xe + 3^1_0n + γ}\]
What changes occur in the nucleus of a radioactive element when it emits an alpha particle? Show by an example?
What will an alpha particle change into when it absorb one electron.
What happens to the atomic number of an element when it emits an alpha particle.
Nuclear power plants in India
The disposal of nuclear waste safely is a big challenge before scientists.
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