Q1 of 269 Page 156

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

(a) In a nuclear reactor?


(b) In the sun?

a) Nuclear fission-Nuclear fission is a process where the nucleus of an atom is split into two or more smaller nuclei, known as fission products.

b) Nuclear fusion-nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles.


More from this chapter

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44

When the material A mined from the earth ,is heated strongly in an insufficeint supply of air, it produces a solid fuel B which consists mainly of carbon. When another material C obtained from trees is heated in an insufficient supply of air, it produces another solid fuel D which also consists mainly of carbon. Name A, B, C and D.

 45

A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.

 2

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

 3

Which particles bring about the fission of uranium-235?