Physics · Science General

Nuclear Physics and Energy

1,324 Questions

Access a comprehensive set of questions on nuclear physics, reactor mechanisms, and atomic energy. Topics include nuclear fission, plasma generation, and radiation control. These physics questions form a core part of the syllabus for various engineering and civil service exams.

Nuclear reactor componentsAtomic energy generationPlasma reactorsNuclear fusionRadiation control

Nuclear Physics and Energy Questions

Multiple choice chemistry the world of carbon organic compounds allotropes of carbon versatile nature of carbon

The allotrope of carbon used in nuclear reactor is :

  1. graphite

  2. diamond

  3. coke

  4. sugar charcoal
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Graphite is the most stable form of carbon under standard conditions. Special grades of synthetic graphite also used as neutron moderator within nuclear reactor. Its low neutron cross-section also recommends its use in proposed fusion reactors.

Multiple choice chemistry the world of carbon organic compounds allotropes of carbon versatile nature of carbon

The allotrope of carbon used in nuclear reactor is:

  1. diamond

  2. suger charcoal

  3. graphite

  4. wood charcoal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Graphite is the most stable allotrope of carbon.Contrary to popular belief, high-purity graphite does not readily burn, even at elevated temperatures. For this reason,it is used in nuclear reactor and for high-temperature crucibles for melting metals.


 Hence,graphite is used in nuclear reactor and it is a allotrope of carbon.

Multiple choice types, sources and impact of waste accumulation waste management - impact of waste accumulation our life and environment geography

Which of the following is an advantage, nuclear fission has over fossil fuels?

  1. Unlimited supply of fuel

  2. Less radioactive waste

  3. Fewer building expenses

  4. Less released carbon dioxide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Nuclear fission is the process in which immense energy is produced by fission of thorium, uranium or plutonium atoms.
  • This is an alternative energy source to non-renewable source of fossil fuels. It has many advantages over fossil fuels.
  • The main advantage is that it generates energy which has less carbon dioxide thereby securing environment.

Multiple choice physics scientists inventions and inventors in science indian scientist: biography and achievements scientist and their achievements

$2$ December $1942$ is known for.

  1. The formation of the Big Bang theory

  2. The activation of the first operational nuclear reactor

  3. The creation of the first controlled chain reaction

  4. The development of the first thermonuclear device
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The world's first nuclear reaction, Chicago Pile-1 reached the stage of criticabty (ready for activation) on Dec'2 1942. The creation of 1st controlled chain reaction done on this day.

Multiple choice chemistry hard water and soft water heavy water study of heavy water hydrogen and its compounds

Heavy water is used as a:

  1. fuel in engines

  2. semiconductor

  3. moderator in nuclear reactors

  4. insulator in steam engines
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Answer:-

Heavy water is used in certain types of nuclear reactors, where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile uranium-235 than with uranium-238, which captures neutrons without fissioning.

Multiple choice chemistry hard water and soft water heavy water study of heavy water hydrogen and its compounds

Heavy water is used as _______ in nuclear reactor.

  1. controller

  2. moderator

  3. promoter

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Heavy water acts as a neutron moderator in nuclear reactors to slow down neutrons so that they are more likely to react with the fissile $U _{235}$ than with $U _{238}$, which captures neutrons without fission process.

Multiple choice chemistry hard water and soft water heavy water study of heavy water hydrogen and its compounds

Atomic nuclear reactors use heavy water. This is different from ordinary water only to the extent that in place of hydrogen it contains:

  1. deuterium, a heavier isotope of hydrogen

  2. nitrogen, which is also a light element

  3. tritium, an heavier isotope of hydrogen

  4. a radioactive element
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Heavy water $(D _2O)$ is a compound containing deuterium and oxygen. It is used in the atomic nuclear reactor as a moderator. It differs from ordinary water $(H _2O)$ only because it has Deuterium i.e. a heavy isotope of hydrogen.

Multiple choice chemistry hard water and soft water heavy water study of heavy water hydrogen and its compounds

Some of the major uses of heavy water are given below. Which one is not correct?

  1. It is used as a moderator in nuclear.

  2. It is used as a tracer compound for studying reaction mechanism

  3. High concentration of heavy water accelerates the growth of plants

  4. It is used in preparing deuterium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

High concentration of heavy water retards the growth of the plants. Tobacco seeds do not grow in heavy water.

Multiple choice chemistry hard water and soft water heavy water study of heavy water hydrogen and its compounds

Heavy water is used as a:

  1. fuel in engines

  2. semiconductor

  3. moderator in nuclear reactors

  4. insulator in steam engines
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Heavy metals is used as a moderator in nuclear reactors to bring the fission reaction by slowing down the neutrons and capturing them. The main reason is that the heavy water captures less neutrons than the normal water. Later it can be used as a fuel which has not undergone enrichment to increase the percentage of Uranium-235

Multiple choice chemistry hydrogen and its compounds heavy water study of heavy water hard water and soft water

Heavy water $\displaystyle \left( { D } _{ 2 }O \right) $ is used in Atomic Reactors as -

  1. Coolant

  2. Controller

  3. Shield

  4. Moderator
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Moderator. e.g. , Heavy water, is a substance used in nuclear reactors of reduce the speed of fast Neutrons produced by nuclear fission.Moderator. e.g. , Heavy water, is a substance used in nuclear reactors of reduce the speed of fast Neutrons produced by nuclear fission.Moderator. e.g. , Heavy water, is a substance used in nuclear reactors of reduce the speed of fast Neutrons produced by nuclear fission.'

Multiple choice chemistry hydrogen and its compounds heavy water study of heavy water hard water and soft water

Heavy water is used in nuclear reactors as:

  1. source of $\alpha-$ particles

  2. slowing down the speed of high energy neutrons

  3. transporting heat of the reactor

  4. heating purpose
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Heavy water is used in nuclear reactors, where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile $U^{235}$ than with $U^{238}$, which captures neutrons without fissioning.

Multiple choice separation of components of mixtures methods of separation elements, compounds and mixtures chemistry

_______is a technology used to produce enriched uranium by forcing gaseous uranium hexafluoride through semipermeable membranes.

  1. Gas solubility

  2. Gas condensation

  3. Solidification

  4. Gas diffusion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gaseous diffusion is a technology used to produce enriched uranium by forcing gaseous uranium hexafluoride through semipermeable membranes. This produces a slight separation between the molecules containing uranium-235 and uranium-238. By use of a large cascade of many stages, high separations can be achieved.