Tag: isotopes and nuclear chemistry

Questions Related to isotopes and nuclear chemistry

Nuclear power plants always operates as ___________.

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. peak load plants

  2. base load plants

  3. can be used as both; the load and peak load plants depends on the requirements

  4. None of these

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Correct Option: B
Explanation:

Base load power plants operate at maximum output. They shut down or reduce power only to perform maintainance or repair. Base load power plants include coal, fuel oil, almost all nuclear, geothermal, hydroelectric, biomass and combined cycle matural gas plants.

Which of the following is NOT a type of nuclear reactor?

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. Proton reactor

  2. Research reactor

  3. Breeder reactor

  4. Power reactor

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Correct Option: A

Which of the reactors are highly stable?

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. Pressurised water reactors

  2. Boiling water reactors

  3. Pressurised heavy water reactors

  4. Fast breeder reactors

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Correct Option: B

Physics contributed most to the development of alternative energy resources with discovery of:

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. Controlled nuclear fission

  2. Photoelectric effect

  3. Motion of charged particles in electromagnetic

  4. Faradays laws of electromagnetic induction

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Correct Option: A
Explanation:

Controlled fission reaction is carried out in reactor to produce electricity.

In fission due to mass defect huge energy is produced. Mainly uranium 235 is used as a fuel in the reactors.

Which of the following is NOT used as a nuclear fuel?

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. $U-232$

  2. $Th-232$

  3. $C1-241$

  4. $U-236$

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Correct Option: D

The pressurised water reactor $(PWR)$ employs:

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. Light water and natural uranium

  2. Heavy water and enriched uranium

  3. Light water and enriched uranium

  4. None of these

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Correct Option: C

When the reactor shuts down why does it require cooling?

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. To cool the reactor from chain reaction

  2. To cool the reactor from fission reaction

  3. Both $(1)$ and $(2)$

  4. None of these

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Correct Option: C
Explanation:
Reactor requires cooling
  • To cool the reactor from chain reaction
  • To cool the reactor from fission reaction

The nuclear reactor of the power plant must be shielded with ______walls. 

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. Lead

  2. Steel

  3. Both

  4. None

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Correct Option: C
Explanation:

The nuclear reactor of the power plant must be shielded with lead and steel walls so as to stop radiations from escaping out to the environment during its normal operation.

The nuclear reactor at Kaiga is a :

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. research reactor

  2. fusion reactor

  3. breedor reactor

  4. power reactor

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Correct Option: D
Explanation:

The nuclear reactor at Kaiga is Kaiga Atomic Power Station.

A nuclear reactor produces and controls the release of energy from splitting the atoms of certain elements. In a nuclear power reactor, the energy released is used as heat to make steam to generate electricity. 
The use of nuclear reactor for electricity and power generation classifies it as a power reactor.

Nuclear power reactor is based on the principle of.

chemistry nuclear physics nuclear reactor the nuclear power station isotopes and nuclear chemistry

  1. Exothermic chemical reactions

  2. Endothermic chemical reactions

  3. Controlled nuclear fission

  4. Thermonuclear fusion

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Correct Option: C
Explanation:

Controlled nuclear fission 

In a nuclear power reactor, materials that may undergo nuclear fission is used in a controlled manner to produce a steady state supply of heat.