Physics · Science General

Nuclear Physics and Energy

1,296 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.

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Nuclear Physics and Energy Questions

Multiple choice

What is a byproduct of nuclear energy?

  1. flooding

  2. radioactive waste

  3. sulfur dioxide

  4. natural gas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nuclear power plants produce radioactive waste as a byproduct of the fission process, which requires specialized long-term storage.

Multiple choice some important compounds of magnesium and calcium the s-block elements chemistry

Valves of an iron chamber used in the manufacturing of superphosphate opens in a big chamber called _________.

  1. reactor

  2. vessel

  3. den

  4. control room
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A well powdered phosphate rock or bone ash mixed known quantity of concentrate sulphuric acid is introduced into a cast iron chamber provided with mechanical stirrer and two valves at bottom. Each valve opens in a big chamber called den. The mixture is stirred for 2 to 5 minutes and then  dumped mechanically into one of the dens through the valve. The mass is kept in the den for about 24 hours.

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which one of the following pair is mismatched?

  1. Nuclear power- radioactive wastes

  2. Solar energy- greehouse effect
  3. Fossil fuel burning- release of CO$ _2$
  4. Biomass burning- release of CO$ _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Nuclear power will generate lots of radioactive wastes which is harmful to the animals and plants.
Solar energy coming to the earth is not responsible for the greenhouse effect. It is the increase in greenhouse gasses in the atmosphere like CO$ _2$, methane and CFC which is released by complete combustion of fossil fuels or biomass in industries or transportation vehicles that prevent the re-radiation of infrared radiation from the earth and result in the increase in temperature of the earth.
The burning of fossil fuels and biomass releases carbon dioxide which thereby causes global warming. 
Therefore, the correct answer is option B.
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

Which one of the following pairs in mismatched-

  1. Nuclear power radioactive wastes

  2. Solar energy green house effect
  3. Fossil fuel burning release of $CO _{2}$
  4. Biomass burning release of $CO _{2}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Solar energy decreases greenhouse gas emissions. Generating electricity with solar power instead of fossil fuels can dramatically reduce greenhouse gas emissions, particularly carbon dioxide (C$O _2$). Greenhouse gases, which are produced when fossil fuels are burned, lead to rising global temperatures and climate change.

So, the correct answer is 'Solar energy green house effect'.
Multiple choice

What is the primary function of a nuclear reactor control system?

  1. To maintain a constant reactor power level

  2. To prevent reactor accidents

  3. To monitor reactor parameters

  4. To control the flow of coolant through the reactor
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary function of a nuclear reactor control system is to maintain a constant reactor power level by adjusting the position of the control rods.

Multiple choice

What type of sensor is used to measure the neutron flux in a nuclear reactor?

  1. Ionization chamber

  2. Proportional counter

  3. Geiger-Mueller counter

  4. Scintillation counter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ionization chambers are used to measure the neutron flux in a nuclear reactor because they are sensitive to the ionization caused by neutrons.

Multiple choice

What is the purpose of a control rod in a nuclear reactor?

  1. To absorb neutrons

  2. To reflect neutrons

  3. To moderate neutrons

  4. To cool the reactor core
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Control rods are used to absorb neutrons in a nuclear reactor in order to control the reactor power level.

Multiple choice

What is the difference between a nuclear reactor scram and a nuclear reactor shutdown?

  1. A scram is a rapid shutdown, while a shutdown is a gradual shutdown

  2. A scram is a manual shutdown, while a shutdown is an automatic shutdown

  3. A scram is a local shutdown, while a shutdown is a global shutdown

  4. A scram is a partial shutdown, while a shutdown is a complete shutdown
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A scram is a rapid shutdown of a nuclear reactor that is initiated by the reactor protection system in response to a safety concern, while a shutdown is a gradual shutdown of a nuclear reactor that is initiated by the operator for maintenance or refueling.

Multiple choice

What is the purpose of a nuclear reactor containment building?

  1. To prevent the release of radioactive material into the environment

  2. To protect the reactor core from damage

  3. To provide shielding for workers from radiation

  4. To control the flow of coolant through the reactor
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The purpose of a nuclear reactor containment building is to prevent the release of radioactive material into the environment in the event of an accident.

Multiple choice

What is the most common type of nuclear reactor in the United States?

  1. Pressurized water reactor

  2. Boiling water reactor

  3. Gas-cooled reactor

  4. Liquid metal fast breeder reactor
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pressurized water reactors are the most common type of nuclear reactor in the United States because they are relatively simple to design and operate.

Multiple choice

What is the purpose of a nuclear reactor moderator?

  1. To slow down neutrons

  2. To speed up neutrons

  3. To absorb neutrons

  4. To reflect neutrons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The purpose of a nuclear reactor moderator is to slow down neutrons so that they are more likely to be absorbed by uranium atoms.

Multiple choice

What is the purpose of a nuclear reactor coolant?

  1. To remove heat from the reactor core

  2. To provide shielding for workers from radiation

  3. To control the flow of neutrons through the reactor core

  4. To prevent the release of radioactive material into the environment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The purpose of a nuclear reactor coolant is to remove heat from the reactor core and transfer it to a heat exchanger, where it can be used to generate electricity.

Multiple choice

What is the difference between a nuclear reactor fuel assembly and a nuclear reactor control rod?

  1. Fuel assemblies contain uranium fuel, while control rods contain neutron-absorbing material

  2. Fuel assemblies are located in the center of the reactor core, while control rods are located around the periphery of the reactor core

  3. Fuel assemblies are used to generate heat, while control rods are used to control the reactor power level

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fuel assemblies contain uranium fuel, while control rods contain neutron-absorbing material. Fuel assemblies are located in the center of the reactor core, while control rods are located around the periphery of the reactor core. Fuel assemblies are used to generate heat, while control rods are used to control the reactor power level.

Multiple choice

What is the purpose of a nuclear reactor pressure vessel?

  1. To contain the reactor coolant

  2. To provide shielding for workers from radiation

  3. To control the flow of neutrons through the reactor core

  4. To prevent the release of radioactive material into the environment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The purpose of a nuclear reactor pressure vessel is to contain the reactor coolant and prevent it from leaking out.

Multiple choice

What is the purpose of a nuclear reactor steam generator?

  1. To transfer heat from the reactor coolant to the secondary coolant

  2. To provide shielding for workers from radiation

  3. To control the flow of neutrons through the reactor core

  4. To prevent the release of radioactive material into the environment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The purpose of a nuclear reactor steam generator is to transfer heat from the reactor coolant to the secondary coolant, which is then used to generate electricity.