Which category of neutrons is most efficient in initiating nuclear fission?

Nuclear Power Plants MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Nuclear Power Plantsmechanical-engineering-mcqs › nuclear-power-plants
Published
23 Jan 2019
Last updated
28 May 2026

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Explanation

Slow (low-energy) neutrons are more effective at inducing fission because they have a higher probability of being absorbed by fissile nuclei, leading to a chain reaction. Fast neutrons are less likely to cause fission without moderation.

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