What is the physical state of water at?

(a) 25°C

(b) 0°C

(c) 100°C?

Give two reasons to justify –

(a) water at room temperature is a liquid.

(b) an iron almirah is a solid at room temperature.

Why is ice at 273 K more effective in cooling than water at the same temperature?

Name A, B, C, D, E and F in the following diagram showing a change in its state.