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प्रश्न
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
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उत्तर
The reason is that the borosilicate glass does not expand much on being heated and therefore they do not crack.
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संबंधित प्रश्न
Describe an experiment to showthat air expands on heating.
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into water. Explain the reason.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
An iron washer is heated State the effect on its density.
What is meant by thermal expansion?
Thermal expansion is always a nuisance.
Explain thermal expansion with suitable examples.
- Assertion: Gas is highly compressible than solid and liquid
- Reason: Interatomic or intermolecular distance in the gas is comparably high.
Analogy:
Ordinary glass:: Glass tumbler.
Pyrex glass:: ______.
