Advertisements
Advertisements
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.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
A longer rod expands ........... than a shorter rod on being heated to the same temperature.
What do you understand by thermal expansion of a substance?
A cubical metal solid block is heated. How will its volume change?
Give reasons for the following:
Telephone wires sag in summer.
The diagram shows a sketch graph showing a change in volume of a given mass of ice at -5°C to water at 15°C.
(i) Why does the temperature along BC remain constant?
(ii) When is the volume of water minimum?
(iii) At what temperature does water have maximum density? Explain.
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
What is thermal expansion?
- Assertion: Gas is highly compressible than solid and liquid
- Reason: Interatomic or intermolecular distance in the gas is comparably high.
The expansion in volume is called linear expansion.
