What is the role of mercury in a thermometer? Can we use water instead of mercury?
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- Below 0oC and above 100oC can't measure by using the water. The most metals are solids at room temperature but the mercury is liquid form because it has high coefficient of expansion. The mercury does not sticking to capillary wall of thermometer can easily measure temperature accurately.
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Mercury is a liquid metal it moves when it is heated because of inter molecular motion of particles. No, we can not use water because it particles moves more freely
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