The purpose of a moderator in a nuclear reactor is to ______?

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The purpose of a moderator in a nuclear reactor is to ______? Answer: Slow down fast neutrons to increase the probability of capture by uranium

A moderator in a nuclear reactor slows down fast neutrons produced during fission so that they can efficiently sustain a chain reaction with the fissile material (like Uranium-235). Common moderators include graphite, heavy water, and light water.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.