Discussion
When water is heated from 0 degree celsius to 10 degrees celsius, how does its volume change ?
Answer: D
The volume first decreases and then increases.
Water behaves unusually between 0 and 4 degrees Celsius. As ice-cold water is warmed, it contracts until about 4 degrees Celsius, where it has its greatest density and smallest volume, because the open, hydrogen-bonded structure left over from ice breaks down. Above 4 degrees it expands normally with heating, so from 4 to 10 degrees its volume increases.
'It shall increase' describes ordinary liquids and ignores the anomaly; 'It shall decrease' is true only up to 4 degrees; and 'first increase and then decrease' reverses the actual order.
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