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Pipelines in cold countries often burst in winter, because
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- water freezes and expands in its volume
- temperature of ice is less than that of water
- pipelines contract in their volume
- pipelines expand due to freezing
- water freezes and expands in its volume
Correct Option: A
Water expands on freezing. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%. The fact that water expands upon freezing causes icebergs to float.
