Qstnid -B-31- 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. - 06: Heat Energy Class 8 Physics

with Solutions - page 6

#31
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.
Ans : When the bottle is heated, air in it expands and escapes the water in the form of bubbles.