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

Explanation

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.