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प्रश्न
Why does it become pleasantly warm when the lakes start freezing?
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उत्तर
Water's liquid state emits heat into its surroundings as it freezes. This exothermic process emits heat into the environment. Because the specific latent heat of ice fusion is high enough, a significant amount of heat must be lost when lake water freezes, resulting in a nice increase in temperature.
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Melting and Freezing
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संबंधित प्रश्न
A substance changes from its solid state to the liquid state when heat is supplied to it. Name the process.
The melting point of napthalene is 80°C and the room temperature is 25°. A sample of liquid napthalene at 90° is cooled down to room temperature. Draw a temperature-time graph to represent this cooling. On the graph mark the region which corresponds to the freezing process.
