Explain the principle and working of Nuclear Reactor with the help of labelled diagram. If one microgram of U 92 235 is completely destroyed in an atom bomb, how much energy will be released?

NUCLEAR REACTOR: A nuclear reactor is a device to produces nuclear energy based on controlled nuclear chain reaction. Principle of nuclear reactor: It works on the principle of achieving a controlled chain reaction of Uranium enriched with U 235 and as a result generating huge amount of energy. The chain reaction is controlled by slowing down the fission neutrons to thermal neutrons by using a moderator. The reaction rate is maintained by controlled rods that can absorb neutrons Working: 1. Neutron induced fission releases energy plus extra fast neutrons. 2. Fast neutrons are slowed down by a “moderator” such as water or graphite, allowing chain reaction to occur. 3. Chain reaction is controlled by controlling the condition of the moderator, or by use of neutron absorbing materials (e.g. cadmium control rods) 4. Heat is removed by some form of heat exchanger where it is used to run a heat engine. Given the amount of uranium destroyed= 1 μgm = 10 - 9 kg . Complete destruction of this mass will emit energy as given by the Einstein's mass energy relation i.e E = m c 2 , where m = mass, and c = velocity of light = 3 × 10 8 m s - 1 Substituting the given values, we have Energy released= E = 1 × 10 - 9 × 3 × 10 8 2 = 9 × 10 7 J

What is meant by the term chain reaction Explain with the help of a diagram how a chain reaction in a bunch of U235 nuclei takes place during nuclear fission

HARD

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain the principle and working of Nuclear Reactor with the help of labelled diagram.

If one microgram of ${}_{92}^{235}U$ is completely destroyed in an atom bomb, how much energy will be released?

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain how is nuclear energy generated in power reactors. How is electricity produced from nuclear energy?

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Write any four differences between nuclear fusion and nuclear fission.

HARD

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Briefly describe the working of a nuclear reactor.

EASY

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Uranium is used to obtain:

HARD

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

What kind of nuclear reaction produces energy in a nuclear reactor?

EASY

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of the nuclear reactor.

HARD

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain the process of release of energy in a nuclear reactor. Draw a schematic diagram of a nuclear reactor and write the function of each part.

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

List any three differences between nuclear fission reaction and nuclear fusion reaction.

EASY

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

The energy of the fast neutrons emitted in a nuclear fission reactor is approximately _____

EASY

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Write the name of two elements used as nuclear energy.

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

A nuclear fuel rod generates energy at a rate of

5 \times 10^{8} W m^{- 3} .

It is in the shape of a cylinder of radius

4.0 mm

and length

0.20 m .

A coolant of specific heat

4 \times 10^{3} J {kg}^{- 1} K^{- 1}

flows, past it at a rate of,

0.2 kg s^{- 1}

. The temperature rise in this coolant is approximately,

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Write a short note on: Nuclear Energy

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

For a nuclear reactor

48 KJ

of energy is produced per minute. If the energy released per fission is

3.2 \times 10^{- 11} J

then the number of fissions which would be taking place in a reactor per second is

EASY

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

In which place of Gujarat, the nuclear power reactor is situated?

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Draw the diagram of a nuclear power reactor and label the following part.

Radiation shield.

EASY

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Which of the following is not derived from the sun?

HARD

Physical Sciences>Matter and Its Interactions>Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.>Nuclear Processes - Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Explain the principle and working of a nuclear reactor with the help of a labelled diagram.

What is meant by the term chain reaction? Explain with the help of a diagram how a chain reaction in a bunch of U-235 nuclei takes place during nuclear fission.

Important Questions on Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.

Learn and Prepare for any exam you want !