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 the water. Explain the reason.
Solution
When the bottle is heated, bubbles of air are seen escaping into the water. This happens because the air present in the glass bottle expands on heating and tries to escape out through the tube into the water.
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
Write true or false for a given statement.
Land and sea breezes are convection currents of cold and warm air.
Fill in the blank
We use a ________ for measuring the temperature of a body.
Fill in the blank
Gases expand _______ than the liquids.
Iron rims are heated before they are fixed on the wooden wheels. Explain the reason.
Name a solid which is a good conductor of heat.
Why is a tea kettle provided with an ebonite handle ?
The bottom of a cooking utensil is painted black. Give the reason.
In ice cubes, the force of attraction between the water molecules is ______.
When heat energy is added to a substance, the kinetic energy of its particles ______ and so the particles move at a higher speed.
