Heavy water is ______________

Correct option is C

The correct answer is (c) compound of deuterium and oxygen.

• Definition: Heavy water is water where the hydrogen atoms are replaced by deuterium, a heavier isotope of hydrogen.
• Chemical Formula: D₂O (Deuterium Oxide).

• Heavier than regular water (H₂O).
• Used as a neutron moderator in nuclear reactors to slow down neutrons for sustained nuclear fission.

Nuclear Reactors:

• Purpose: Generate electricity through controlled nuclear fission.

Components:

1. Fuel: Uranium-235 or Plutonium-239.
2. Moderator: Slows neutrons (e.g., heavy water, graphite).
3. Control Rods: Regulate the fission process by absorbing neutrons.
4. Coolant: Transfers heat (e.g., water, gas, or liquid metal).
5. Containment: Shields radiation and ensures safety.

Types of Reactors:

• Pressurized Water Reactors (PWRs).
• Boiling Water Reactors (BWRs).
• Fast Breeder Reactors (FBRs).

Applications:

• Electricity generation.
• Research.
• Medical isotope production.