Multiple choice

What is the use of graphite rod in an atomic reactor?

  1. As lubricant

  2. As fuel

  3. As a non-conducting layer inside the reactor

  4. To decrease the velocity of neutron

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Graphite rods in nuclear reactors serve as moderators - they slow down fast neutrons produced during fission to thermal energies, making them more likely to cause further fission reactions. Graphite is NOT used as fuel (uranium/plutonium are fuel), not as lubricant in this context, and it is a conductor, not an insulator.

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