why is mercury used in a thermometer
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MERCURY IS USED IN THERMOMETERS DUE TO ITS EXPANSION ON DIFFERENT TEMPRATURES
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Most metals are good conductors of heat and they are solids at room temperature. Mercury is the only one in liquid state at room temperature. It'sused in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in athermometer.
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