At 0°C what is the physical state of water?
Correct answer: D. Both ice and liquid
- A. Ice
- B. Liquid
- C. Vapour
- D. Both ice and liquid
Explanation
0degree C at 1 atm pressure is the freezing point of pure water where its solid-state and liquid state coesxist in an equilibrium.
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About Anomalous Behaviour of Water
Water expands when cooled below 4°C and when it freezes, giving liquid water its maximum density at 4°C. The explanation depends on hydrogen bonding and the open structure of ice, which makes ice less dense than water and allows it to float.
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