General Knowledge - General Science - Discussion
Discussion Forum : General Science - Nuclear Science (Q.No. 1)
1.
Which of the following is used as a moderator in nuclear reactor?
Discussion:
42 comments Page 1 of 5.
MUKUNDA pollayi said:
9 years ago
In nuclear reactors. There is. No participation of electrons. Only proton and neutron only. In this case, both graphite and heavy water (20. Atomic mass) are suggestible.
Both reduce the speed of neutrons.
Then, The probability of colliding nature of neutrons to uranium will increase.
In each collision, 3 neutrons released out of 3, two are absorbed by cadmium rods. Remaining 1 neutron speed will be controlled by graphite and heavy water.
Both reduce the speed of neutrons.
Then, The probability of colliding nature of neutrons to uranium will increase.
In each collision, 3 neutrons released out of 3, two are absorbed by cadmium rods. Remaining 1 neutron speed will be controlled by graphite and heavy water.
R Mandal said:
5 years ago
"Light water" is the most commonly used moderator (roughly 75% of the world's reactors) although the term is slightly ambiguous, usually meaning natural freshwater, but could also refer to actual light water. Solid graphite (20% of reactors) and heavy water (5% of reactors) are the main alternatives.
(1)
Vansh said:
7 years ago
Graphite is a naturally-occurring form of crystalline carbon. It is a native element mineral found in metamorphic and igneous rocks. Graphite is a mineral of extremes. It is extremely soft, cleaves with very light pressure, and has a very low specific gravity.
Kartick Murmu said:
4 years ago
Heavy water (D2O) is used as a moderator in a nuclear reactor. It containing significantly more than the natural proportions (one in 6,500) of heavy hydrogen (deuterium, D) atoms to ordinary hydrogen atoms.
(1)
Kriti said:
1 decade ago
Graphite is used as moderator in nuclear reactor because it slow downs the fast moving electrons which are coming from fission reaction.
Sushmitha said:
1 decade ago
Graphite is most commonly used in nuclear reactor because it can withstand very high temperatures and slow downs the moving electrons.
Aman said:
1 decade ago
In nuclear reactor heavy water and carbon rod is used. In this point of view graphite is a pure form of carbon. So answer is (B).
Priya said:
10 years ago
Graphite is used because it slows down the speed of neutrons so that the nuclear reaction can occur in a controlled manner.
Deepak said:
1 decade ago
Graphite is used because is cheaper supplement as compared to other options and more withstanding capacity is available.
Zahid said:
8 years ago
But ordinary water is not used as moderator there are many types moderators like graphite, cd road as well as d2o.
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