Name two common reactor coolant materials.

Name two common reactor coolant materials.

• A. Light water (H2O) and heavy water (D2O); others include gas coolants like CO2 and molten salt in some designs.
• B. Pure nitrogen gas and helium are the standard coolants in all reactors.
• C. Liquid sodium and potassium are the only common coolants.
• D. Graphite is the primary coolant material used.

Answer: (A)