Question

Why is mercury used in thermometer ?

Answer 1

Explanation:

Mercury was used in thermometers because it has a high coefficient expansion rate therefore is sensitive to the heat of your body. It has a high boiling point also and can be used to measure higher temperatures.

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Answer 2

Answer:

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.

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