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प्रश्न
How does the anomalous expansion of water help aquatic organisms in cold climates?
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उत्तर १
The anomalous expansion of water helps in the survival of water animals in very cold climates. Initially when the temperature of waterfalls, becomes heavier and sinks down. This process continues till 4°C. Then after this expansion takes place. The surface layer of water gets freezed. Ice being a bad conductor of heat does not allow loss of heat from the water below and results in the survival of water animals.
उत्तर २
When water is cooled it contracts and its density, increases until the temperature reaches 4°C, on further cooling water starts expanding with decrease in its density. This is anomalous phenomenon. The aquatic organisms can live there easily.
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संबंधित प्रश्न
Explain the following:
In cold regions in winter, the rocks crack due to anomalous expansion of water.
Explain the following
Fishes survive in ponds even when the atmospheric temperature is well below 0°C.
Explain the following
A hollow glass sphere which floats with its entire volume submerged in water at 4°C, sinks when water is heated above 4°C.
What will be the approximate temperature of water in the lake shown in the following diagram?
(i) At X, and
(ii) At Y?
Observe the given graph and answer the following questions:
- Name the process represented in the figure.
- At what temperature does this process take place?
