Consider the following substances:
1. Heavy water 2. Graphite
Which of the substances given above is/are used as a moderator in a nuclear reactor?
Consider the following substances:
1. Heavy water 2. Graphite
Which of the substances given above is/are used as a moderator in a nuclear reactor?
The correct option is C Both 1 and 2
1. Heavy water 2. Graphite is the substances given above is/are used as
a moderator in a nuclear reactor.
Commonly used moderators include regular (light) water (roughly 75% of
the world's reactors), solid graphite (20% of reactors) and heavy water (5% of
reactors). Beryllium has also been used in some experimental types, and
hydrocarbons have been suggested as another possibility.
A graphite reactor is a nuclear reactor that uses carbon as a neutron
moderator, which allows un-enriched uranium to be used as nuclear fuel. The
very first artificial nuclear reactor, the Chicago Pile-1, used graphite as a
moderator.
From the Wikipedia article on Heavy water, in the Applications section:
“Heavy water is used in certain types of nuclear reactors, where it acts as a
neutron moderator to slow down neutrons so that they are more likely to react
with the fissile uranium-235 than with uranium-238, which captures neutrons
without.
1. Heavy water 2. Graphite is the substances given above is/are used as a moderator in a nuclear reactor.
Commonly used moderators include regular (light) water (roughly 75% of the world's reactors), solid graphite (20% of reactors) and heavy water (5% of reactors). Beryllium has also been used in some experimental types, and hydrocarbons have been suggested as another possibility.
A graphite reactor is a nuclear reactor that uses carbon as a neutron moderator, which allows un-enriched uranium to be used as nuclear fuel. The very first artificial nuclear reactor, the Chicago Pile-1, used graphite as a moderator.
From the Wikipedia article on Heavy water, in the Applications section: “Heavy water is used in certain types of nuclear reactors, where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile uranium-235 than with uranium-238, which captures neutrons without.
