Tag: isotopes and nuclear chemistry

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Questions Related to isotopes and nuclear chemistry

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

Nuclear power plants always operates as ___________.

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Which of the reactors are highly stable?

  1. Pressurised water reactors

  2. Boiling water reactors

  3. Pressurised heavy water reactors

  4. Fast breeder reactors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Boiling Water Reactors (BWR) are generally considered highly stable due to the negative void coefficient, where increased steam production reduces reactivity, providing an inherent safety mechanism.

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

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

  1. Controlled nuclear fission

  2. Photoelectric effect

  3. Motion of charged particles in electromagnetic

  4. Faradays laws of electromagnetic induction
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. $U-232$
  2. $Th-232$
  3. $C1-241$
  4. $U-236$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Common nuclear fuels include U-235, U-238, Th-232, and Pu-239/241. U-232 is a decay product, Th-232 is fertile (can become fuel), and C1-241 (likely Pu-241) is a fuel. U-236 is a stable decay product of U-235 fission, not used as fuel.

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

The pressurised water reactor $(PWR)$ employs:

  1. Light water and natural uranium

  2. Heavy water and enriched uranium

  3. Light water and enriched uranium

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pressurized Water Reactors (PWR) use light water as both coolant and moderator, and require enriched uranium (typically 3-5% U-235) to sustain the chain reaction.

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

The nuclear reactor at Kaiga is a :

  1. research reactor

  2. fusion reactor

  3. breedor reactor

  4. power reactor
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Nuclear power reactor is based on the principle of.

  1. Exothermic chemical reactions

  2. Endothermic chemical reactions

  3. Controlled nuclear fission

  4. Thermonuclear fusion
Reveal answer Fill a bubble to check yourself
C Correct answer
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.