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प्रश्न
Define.
Nuclear fission
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उत्तर
In nuclear fission, the atom of a heavy element is bombarded by a neutron to form an unstable isotope which further splits into two or more smaller nuclei releasing extra neutrons and large amount of energy and heat.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Splitting of a heavy nucleus into two lighter nuclei is called ........
What is the nuclear fuel in the sun ?
The following question are about the nuclear reactor of a power plant.
Will the fuel rods last for ever?
The following question are about the nuclear reactor of a power plant.
What is the function of boron rods in the nuclear reactor?
In the reactor of a nuclear power plant, name the material which is used:
(a) as a moderator
(b) to absorb radiations
(c) in the fuel rods
(d) in the control rods
(e) to carry away heat
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.
The energy produced by converting 1 gram mass of a nuclear fuel into energy completely is:
(a) 9 × 1016 J
(b) 9 × 1014 J
(c) 9 × 1015 J
(d) 9 × 1013 J
One type of energy which has not been controlled so far is:
(a) ocean thermal energy
(b) nuclear fusion energy
(c) geothermal energy
(d) nuclear fission energy
Which of the following can undergo nuclear fusion reaction?
(a) uranium
(b) deuterium
(c) barium
(d) krypton
What do you mean by atomic number?
'Radioactivity is a nuclear phenomenon'. Comment on this statement.
What is a.m.u?
What is the source of energy of sun or stars?
What is the effect on the atomic mass and the atomic number of a radioactive element, after the emission of an α-particle?
What happens to the atomic number of an element when it emits an alpha particle.
A radioactive carbon nucleus 6C14 emits a β-particle to form a nitrogen nucleus. Represent the change by an equation showing the atomic and mass number of each elements.
State the energy conversion taking place in a solar cell.
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
What is the number of protons in 92U238?
What is stellar energy?
Copy and complete the nuclear reaction by filling in the blanks.
\[\ce{_92U^235 + _0n^1 -> _56Ba^{\underline{\phantom{....}}} + \underline{\phantom{..}}Kr^92 + 3 _0n^1}\]
