Discussion
The process that releases neutrons from the nucleus is
Answer: E
The process that releases neutrons from the nucleus is nuclear fission.
When a heavy nucleus such as uranium-235 absorbs a neutron and splits, the fragments emit free neutrons, on average between two and three per fission. Those neutrons carry on the chain reaction in a reactor or a bomb, so fission is the standard answer.
The other options do not release free neutrons. In β-decay a neutron turns into a proton and the nucleus emits an electron and an antineutrino; α-decay emits a helium nucleus, whose neutrons leave bound inside it; pair production turns a photon into an electron and a positron. Nuclear fusion is the one close competitor: some fusion reactions (deuterium with deuterium or tritium) do give off a neutron, but others, such as the proton-proton fusion that powers the Sun, do not, so fusion is not a process that releases neutrons as a rule, and fission is the better answer.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development