Nuclear Reactions

The radio nuclide ${}_{90}{}^{234}\mathrm{Th}$ undergoes two successive ${\mathrm{\beta }}^{-}-$ decay and one $\alpha -$ decay respectively. The number of protons and mass number respectively of the resulting radio nuclide are:

Mass number of a radioactive nucleus is A. It undergoes an $\mathrm{\alpha }$-decay such that $\mathrm{\alpha }$-particle comes out with kinetic energy of 96 MeV. If Q value of the reaction is 100 MeV. Then the value of A is (Assume that daughter nucleus is in ground state)

Shields are designed to prevent the exposure of harmful radiations to people working in the nuclear reactor.

The material most commonly used for shielding is 

Why shields are used in nuclear reactor?

List the important components of a nuclear power plant.

Reactor core is one of the important component of a nuclear reactor.

List any three parts of a nuclear reactor.

Which of the following is a part of a nuclear reactor?

The control rod in a nuclear reactor is made of.

Nuclear fission can be controlled by using control rods made up of boron.

Define radioactive transmutation?

Explain the term shielding in nuclear reactor.

List the different parts of a nuclear reactor.

Name any three fertile material in nuclear reactor.

Uranium $238$ is a fertile material.

Fertile material is a material that can be converted into a fissile material by neutron absorption and subsequent nuclei conversions.

What is fertile material in nuclear reactor?