What is the freezing point of water?
Correct answer: D. 0 °C
- A. -2 °C
- B. -4 °C
- C. None of these
- D. 0 °C
Explanation
Freezing or melting point is defined as the temperature at which the liquid and solid states of a substance are in equilibrium with each other. Lowering the temperature from the freezing point causes the liquid part to convert into solid (freeze) while raising the temperature from this point causes the solid part to convert to liquid (melt). For water, the freezing point is 0 °C.
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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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