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

State the disadvantages of nuclear energy.

The following questions are about the nuclear reactor of a power plant.

a) Which isotope of uranium produces the energy in the fuel rods?

b) Will the fuel rods last forever?

c) Is the energy produced by nuclear fission or nuclear fusion?

d) What is the purpose of using the graphite moderator ?

e) What is the function of boron rods in the nuclear reactor?

f) Why is liquid sodium (or carbon dioxide gas) pumped through the reactor?

In the nuclear reactor of a power plant:

(a) How do control rods control the rate of fission?

(b) How is heat removed from the reactor core, and what use is made of this heat?

How does inserting the control rods in the graphite core affect the fission in the reactor? Explain your answer.