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प्रश्न
A student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following (Fig. 1.1) would correctly represent the result? Justify your choice.
पर्याय
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उत्तर
Since ice and water are in equilibrium, the temperature would be zero. When we heat the mixture, ‘energy supplied is utilised in melting the ice and the temperature does not change till the ice melts because of latent heat of fusion. On further heating the temperature of the water would increase. Therefore (d) is the correct option.
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संबंधित प्रश्न
Differentiate between melting point ,giving atleast one example of each.
Explain the term Melting.
Some ice is taken in a beaker and its temperature is recorded after each one minute. The observations are listed below
| Time (in minute) | Temperature (in °C) |
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3.8 |
| 7 | 7.6 |
| 8 | 11.4 |
From the above observations, what conclusion do you draw about the melting point of ice?
Analogy:
Melting: ice into water on heating,
freezing: _______.
Water as ice has a cooling effect, whereas water as steam may cause severe burns. Explain these observations.
Conversion of solid state to liquid state is called fusion; what is meant by latent heat of fusion?
Sweating causes cooling because water has a ______.
Ice does not melt rapidly because of ______.
A change of state is a change of a substance from ______.
Define the following:
Melting or fusion:
