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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
Of what material are the control rods of a nuclear reactor made?
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?
Differentiate between nuclear fission and nuclear fusion.
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
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 following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
What does E represent?
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?
An element P has an atomic mass of 239 and an atomic number of 92. It
emits a beta particle forming an element Q. Q can be represented by
Which one of the following statements about alpha and beta particles is
correct?
What do you mean by nuclear energy? What is responsible for its release?
What is nuclear energy? Name the process used for producing electricity using the nuclear energy.
State, giving reason, whether the following nuclear decay are allowed or not?
\[\ce{_Z^AP -> _{Z-2}^AY + _2^4He}\]
When an alpha particle gains two electrons it becomes neutral and becomes an atom of an element which is a rare gas. What is the name of this rare gas?
An atomic nucleus A is composed of 84 protons and 128 neutrons. It emits an α-particle and is transformed into nucleus B. Write down the composition of B.
Draw a simplified labelled diagram of a hot cathode ray tube.
The disposal of nuclear waste safely is a big challenge before scientists.
Write the merits of nuclear energy.
Which is the process used to harness nuclear energy these days? Explain it briefly.
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
