Which property of liquids is used in making thermometer? Which is the commonly used liquid? [2 MARKS]

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Solution

Property : 1 Mark
Liquid : 1 Mark

The property of thermal expansion of liquids is used in making thermometers. According to this, liquid expand on heating and contract on cooling.
Mercury is commonly used in thermometers as it expands and contracts uniformly and rapidly when heated or cooled respectively.

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