In the reactor of a nuclear power plant, name the material which is used :
(a) As a moderator
(b) To absorb radiations
(c) In the fuel rods
(d) In the control rods
(e) To carry away heat
(a) Graphite is used as a moderator.
(b) Concrete are used to absorb the radiations
(c) U-235 is used in control rods
(d) Boron can be used as control rods
(e) Liquid sodium is used to carry away heat.