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प्रश्न
The disposal of nuclear waste safely is a big challenge before scientists.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Arrange the following fuels in the order of decreasing calorific values (keeping the fuel with highest calorific value first):
Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane
Why are very high temperatures required for fusion to occur?
If 25 atomic mass units (u) of a radioactive material are destroyed in a nuclear reaction, how much energy is released in MeV?
What will happen if slow moving neutrons are made to strike the atoms of a heavy element `''235_92U`? What is the name of this process?
State the disadvantages of nuclear energy.
What are the advantages and disadvantages of using nuclear fuel for generating electricity?
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.
Nuclear fission reactions are not a source of energy for one of the following. This is:
(a) atom bomb
(b) power plants
(c) sun
(d) pacemaker
One MeV of nuclear energy is equivalent to:
(a) 1.6 × 10−13 J
(b) 1.6 × 10−19 J
(c) 1.6 × 10−16 J
(d) 1.6 × 10−15 J
The disposal of waves produced in a nuclear power plant poses a big problem because it is:
(a) too heavy
(b) highly inflammable
(c) extremely foul smelling
(d) highly radioactive
The isotope of 92U235 decays by alpha emission to an isotope of Thorium (Th). The Thorium isotope decays by beta emission to an isotope of Protactaminum (Pa). Write down the equations to represent these two nuclear changes.
What will an alpha particle change into when it absorb two electrons.
What are beta rays and gamma rays?
Draw a simplified labelled diagram of a hot cathode ray tube.
Write the merits of nuclear energy.
Give scientific reasons.
It is absolutely necessary to control the fission reaction in nuclear power plants.
Give scientific reason.
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.
