Question

why is mercury used in thermo meter

Answer 1

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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Answer 2

Mercury is used in thermometer because:

•It expands on heating

•It doesnt stick to the glass

•it is present in liquid form

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