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2. Observe the following graph. Considering the change in volume of water as its temperature is raised from \(0^o\)C, discuss the difference in the behaviour of water and other substances. What is this behaviour of water called?

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If the temperature of water is raised from 0 °C to 10 °C, its volume goes on decreasing in the range 0 °C to 4 °C. It is minimum at 4 °C. The volume of water goes on increasing in the range 4 °C to 10 °C.
In general, when a substance is heated, its volume goes on increasing with temperature. Thus, in the range 0 °C to 4 °C, behaviour of water is different from other substances. It is called anomalous behaviour of water.
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