Question

Identify the substance that is more effective in cooling.

• A. Water at 0°C
• B. Water at 100°C
• C. Ice at 0°C
• D. Steam at 100°C

Answer 1

The correct option is C

Ice at 0°C

Ice at $0^{\circ }C$ can be more effective in cooling because of the phenomenon called latent heat of fusion. It is the heat absorbed by the ice to change its state to water at $0^{\circ }C$ . So, ice at $0^{\circ }C$ can extract more heat from another substance and give better cooling.