QQuestion
Explain nuclear fission. Why is nuclear fission essential for nuclear fusion? [2+1]
✓Answer
Nuclear Fission
The process in which a heavy atomic nucleus splits into two or more lighter nuclei, with the release of a large amount of energy and neutrons, is called nuclear fission.
For example:
²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + 3¹n + Energy
Nuclear fusion requires an extremely high temperature to occur. The large amount of heat produced by nuclear fission is used to provide this high temperature and initiate nuclear fusion.
Related Questions
More WBBSE Moderate level questions
There are 92 protons and 143 neutrons in the nucleus of a radioactive atom. If an α-particle is emitted from that atom how many protons and neutrons will be present in the nucleus of the new atom formed? What type of nuclear reaction is the source of energy of stars? [2 + 1]
Write one use of each of the x-ray and ϒ-ray. Mention one harmful effect of γ-ray.
What do you mean by mass defect? Actual mass of proton, neutron and helium nucleus are 1.00728 amu, 1.00867 amu and 4.0015 amu, respectively. What is the mass defect of ⁴₂He (helium) nucleus? [1+2]
The number of a and β particles emitted in the reaction 86A222 → 84B210 wouldrespectively be (a) 6α, 3β (b) 3α, 4β (c) 4α, 3β (d) 3α, 6β
The correct order of penetrating power of α-, β- and γ- rays is γ > α > β γ > β > α α > β > y β > γ > α
Compare the charge, penetrating power and ionising power of α and γ rays.
If the mass of an electron is m, then the mass of a β-particle is: (a) m (b) 2m (c) 3m (d) 4m
By which type of nuclear reaction is energy produced in a nuclear reactor?
Write the name of the positively charged radioactive particle.
Mention one practical application of controlled chain reaction. OR Why is a nuclear fission conducted before a nuclear fusion ?
By the emission of which radioactive ray from the atom of a radioactive element, no new atom is created?
Mention one peaceful use of atomic energy. OR Fill up the blank : γ-ray is ____ wave of short wavelength.