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प्रश्न
A glass tumbler containing hot water is kept in the freezer compartment of a refrigerator (temperature < 0°C). If you could measure the temperature of the content of the tumbler, which of the following graphs (Fig.1.2) would correctly represent the change in its temperature as a function of time.
पर्याय
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उत्तर
The hot water in the glass tumbler kept in the freezer will first become cold and the temperature will drop till 0°C. At 0°C, water loses heat equal to the latent heat of fusion till entire water freezes to form ice at 0°C. During this change of state from liquid to solid, the temperature remains constant.
On still further cooling, the temperature of ice slowly falls with time. Therefore, the correct option is (a).
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संबंधित प्रश्न
The temperature at which a solid convert into a liquid is called its .........
Differentiate between melting point ,giving atleast one example of each.
Explain the term Melting.
Describe an experiment to demonstrate that a substance absorbs heat during melting without change in its temperature.
The fixed temperature at which matter changes state from solid to liquid is called ______.
Analogy:
Melting: ice into water on heating,
freezing: _______.
What is melting? Give example.
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 ______.
