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प्रश्न
State the melting point of ice.
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उत्तर
MELTING POINT OF ICE: “Is the constant temperature at which it starts (melting) changing from ice to water.”
It is 0°C for ice.
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संबंधित प्रश्न
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: _______.
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.
Water as ice has a cooling effect, whereas water as steam may cause severe burns. Explain these observations.
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.
It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why?
Define latent heat of fusion?
Explain the following effects of heat.
Change in state
Define the following:
Melting or fusion:
