Question

give reason - mercury is used as a liquid in a thermometer

Answer 1

it is good conductor

Answer 2

◇○ 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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