Why do we use mercury as a thermometric liquid
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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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Answer:mercury is a good conductor of heat and I does not stick on walls of th thermometers like water does
water has strong adhesion forces hence it sticks on walls of thermometer
WARNING: NEVER play with mercury it can cause brain damage and kidney failure though ti is very useful
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