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Weather and Climate

An empty glas...

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.

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Solution

When the bottle containing the air is heated, air bubbles are observed escaping in water. This happens because air present in the bottle expands and rises on heating and tries to escape out through the tube into the water in form of bubbles.

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