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प्रश्न
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.
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उत्तर
When the bottle is heated, the air in it expands and the solubility of gases in it decreases which escapes from water in the form of bubbles.
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संबंधित प्रश्न
State three factors on which depend the linear expansion of a metal rod on heating.
Two iron rods – one 10 m long and the other 5 m long, are heated to the same rise in temperature. Which will expand more?
Describe an experiment to showthat air expands on heating.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
Define the following term:
Coefficient of superficial expansion
What difference do you think heating the solid will make in their molecules?
Explain thermal expansion with suitable examples.
If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.
How solids are expanded on heating?
When the vibrations move from one molecule to another molecule heat will flow.
