Question:
Which one of the following cannot be used as a moderator in a nuclear reactor?
Which one of the following cannot be used as a moderator in a nuclear reactor?
Updated On: Jul 12, 2022
- Water
- Heavy water
- Molten sodium
- Graphite
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The Correct Option is A
Solution and Explanation
Moderator is used to slow down the fast moving neutrons.Most commonly used moderator, are graphite and heavy water $(D_2 O)$.Water cannot be used as moderator in a nuclear reactor.
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Concepts Used:
Nuclei
In the year 1911, Rutherford discovered the atomic nucleus along with his associates. It is already known that every atom is manufactured of positive charge and mass in the form of a nucleus that is concentrated at the center of the atom. More than 99.9% of the mass of an atom is located in the nucleus. Additionally, the size of the atom is of the order of 10-10 m and that of the nucleus is of the order of 10-15 m.
Read More: Nuclei
Following are the terms related to nucleus:
- Atomic Number
- Mass Number
- Nuclear Size
- Nuclear Density
- Atomic Mass Unit