Advertisements
Advertisements
Question
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
Solution
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
RELATED QUESTIONS
What is matter? What is it composed of?
State three factors on which depend the linear expansion of a metal rod on heating.
In the ball and ring experiment, if the ball after heating is left to cool on the ring for sometime, the ball again passes through the ring. Explain the reason.
Water is heated from 0°C to 4°C. Will it expand?
Give reasons for the following:
Telephone wires sag in summer.
Solids ______ on heating and ______ on cooling.
Thermal expansion is always a nuisance.
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.
What type of glassware is used in laboratories? Why?
