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प्रश्न
Give reasons for the following:
In cold countries, water pipes burst in winter.
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उत्तर
In cold countries water pipes burst in winter because the water has maximum density at 4°C and, due to anomalous expansion of water, it expands when the water is cooled to a temperature below 4°C
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संबंधित प्रश्न
One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason.
A cubical metal solid block is heated. How will its volume change?
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Thermal expansion is always a nuisance.
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
What type of glassware is used in laboratories? Why?
When the vibrations move from one molecule to another molecule heat will flow.
