A block of ice at –10°C is slowly heated and converted to steam at 100°C. Which of the following curves represent the phenomenon qualitatively:
Options

Question

A block of ice at –10°C is slowly heated and converted to steam at 100°C. Which of the following curves represent the phenomenon qualitatively:

G1 Physics · Accepted Answer

The correct heating curve must show: 1. Rise in temperature of ice from -10°C to 0°C. 2. Constant temperature at 0°C during melting. 3. Rise in temperature of water from 0°C to 100°C. 4. Constant temperature at 100°C during boiling. Therefore, Image 4 is correct.