why is the blub of thermometer kept above the surface of water determining the boiling point of water
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The boiling point is defined as the temperature at which the vapour pressure is exactly equal to the external pressure. ... This, the steam just above the water will be a better measure of the boiling point because it will not yet have had a chance to cool down.
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because in the bulb that contain mercury liquid if will bulb put in the boiling water the bulb will blast and it will not useful for next time
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