What type of nuclear reaction is responsible for the liberation of energy:

(a) In a nuclear reactor?

(b) In the sun?

Which product of the nuclear fission of uranium-235 is utilized to cause further fission of its nuclei?

Which particles bring about the fission of uranium-235?

State whether the fission of uranium-235 is caused by low energy neutrons or high energy neutrons.

Name the type of nuclear reaction which is involved in the working of:

(a) A hydrogen bomb.

(b) An atom bomb.

Name the moderator used in a nuclear reactor.

Of what material are the control rods of a nuclear reactor made?

What do you think is the purpose of the thick, concrete chamber surrounding the reactor of a nuclear power plant?

Where, in a nuclear power station, is uranium used up?

State one use of nuclear fission reactions.

Name the unit which is commonly used for expressing the energy released in nuclear reactions.

How many MeV are equivalent to 1 atomic mass unit (u)?

Fill in the following blanks with suitable words:

(a) Splitting of a heavy nucleus into two lighter nuclei is called .............

(b) Uranium-235 atoms will split when hit by ............ This is called ....................

(c) Nuclear ................ is used in nuclear power stations for the production of electricity.

(d) In a nuclear power station, nuclear fission takes place in the .............