Beta decay
Beta decay is a Science & Technology concept from the MPSC syllabus, tested in 3 past MPSC questions (2022, 2023, 2025). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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Real questions that test this
खालील परिकल्पित अभिक्रिया पूर्ण करा : 235 92 U + 1 0 n -> x 54 Xe + y 38 Sr + 4 1 0 n
(a)x = 141, y = 91
(b)x = 139, y = 93
(c)x = 141, y = 93
(d)x = 139, y = 95
In nuclear fission of Uranium-235 bombarded by a neutron, mass numbers and atomic numbers must balance. Solving for standard fission fragments gives x = 141, y = 92 or 91 with varying neutron counts, fitting options (a) and (b).
जेव्हा α-कण किरणोत्सारी घटकातून बाहेर पडतात तेव्हा When α-particle emits from a radioactive element then
An alpha particle is a helium nucleus (He-4,2). When emitted from a radioactive nucleus, the mass number decreases by 4 and the atomic number decreases by 2.
_____________ या प्रक्रियेत न्यूट्रीनो कण उत्सर्जित होतो. Neutrino particle is emitted in the process of _____________.
During beta decay, a neutron transforms into a proton while emitting an electron (beta particle) and an antineutrino, or a proton into a neutron emitting a positron and a neutrino.