Controlled and Uncontrolled Nuclear Reaction

Q. Can matter be converted into energy?

Q.

The energy released from nuclear fission is used to -

1. produce steam and generate electricity

2. produce another nuclear fission reaction

3. decompose uranium

4. none of these

Q.

On an average how many neutrons are emitted in the fission reaction of U-235?

1. 25

2. 2.4

3. 40

4. 13.4

Q.

Which of the following options are correct regarding controlling the rate of nuclear reaction?

1. A smaller size of fuel will have controlled rate of nuclear fission reaction.

2. Controlling the energy of neutrons affects the rate of nuclear fission reaction.

3. A larger size of fuel has less probability of a self-sustained chain reaction.

4. The constituents of the nuclear fuel determine the rate of the chain reaction.