. Clinical thermometer is used to measure the body temperature. The bulb of the thermometer contains liquid mercury. Why is mercury used in clinical thermometer?
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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's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer.Feb 11, 2007
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because mercury is a metal which is liquid at room temperature and it has highest coefficient expansion
it detects slightly changes in temperature
so it is used
it detects slightly changes in temperature
so it is used
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