Question

Identify the substance that is more effective in cooling.

• A. Water at ${80}^{\circ }C$
• B. Water at ${100}^{\circ }C$
• C. Ice at $0^{\circ }C$
• D. Steam at ${100}^{\circ }C$

Answer 1

The correct option is C Ice at $0^{\circ }C$

Ice at $0^{\circ }C$ can be more effective in cooling because of the phenomenon called latent heat of fusion. Latent heat of fusion of ice is the heat absorbed by 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.