* Pls Answer In short *why do we use Mercury as a fluid in thermometer class 7th WHOEVER WILL ANSWER WILL BE THANKED ♥️
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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. It also has a high boiling point which makes it very suitable to measure higher temperatures.
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