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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
State one use of nuclear fission reactions.
Fill in the following blank with suitable word:
Splitting of a heavy nucleus into two lighter nuclei is called ........
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?
Name one installation where such a process is utilised.
The following question are about the nuclear reactor of a power plant.
Is the energy produced by nuclear fission or nuclear fusion?
In the nuclear reactor of a power plant:
how do control rods control the rate of fission?
The control rods used in the reactor of a nuclear power plant are made of:
(a) steel
(b) graphite
(c) uranium
(d) boron
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
Which one of the following statements about alpha and beta particles is
correct?
Distinguish between α, β and γ rays.
Write the approximate mass of a proton, neutron and electron in a.m.u.
A radioactive nucleus undergoes a series of decays according to the sequence
\[\ce{X->[β] X1->[α] X2->[α]X3}\]
If the mass number and atomic number of X3 are 172 and 69 respectively, what is the mass number and atomic number of X?
Complete the following nuclear change:
\[\ce{_92P^238->[-α] ...P1 ... ->[-β]...P2 ... ->[-β] ... P3 ...}\]
State three properties of α-rays.
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.
Find the number of electrons in the neutral atom of this isotope.
An isotope of uranium is 92Y238, i.e., it has mass number 235 and atomic number 92.
Find the number of protons and neutrons in its nucleus.
Thermal power generation : Air pollution : : Nuclear power generation : _____________
