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In nuclear reactors, graphite is used as a/an
- a)Fuel
- b)Lubricant
- c)Moderator
- d)Insulator
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
In nuclear reactors, graphite is used as a/ana)Fuelb)Lubricantc)Moder...
The correct answer is Moderator.
Key-Points
- Graphite has been used as a moderator and reflector of neutrons in nuclear power plants.
- It is used in nuclear plants due to its extreme purity and its ability to withstand extremely high temperatures and high irradiation.
- Graphite blocks help control nuclear reactions in this way:
- As neutrons and gamma radiation are liberated from the nuclei of split uranium atoms, they travel through the graphite.
- Graphite blocks absorb some energy from the neutrons that pass through them.
- Graphite atoms also absorb gamma rays and store their energy.
Important Points
Graphite:
- It is a naturally-occurring form of crystalline carbon.
- It is a native element mineral found in metamorphic and igneous rocks.
- It is extremely soft, cleaves with very light pressure, and has a very low specific gravity.
- It is the only non-metal element that is a good conductor of electricity.
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In nuclear reactors, graphite is used as a/ana)Fuelb)Lubricantc)Moderatord)InsulatorCorrect answer is option 'C'. Can you explain this answer?
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