Mercury is used in thermometer give reason geography
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mercury is the only metal which is found in liquid state in room temperature and it also has very high boiling point which makes it suitable to measure high temperature,it has high cofficient of expansion.
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Mercury is commonly used in thermometers due to its following advantages:
It shows uniform rate of expansion with the rise in temperature.
It does not stick to the walls of a glass tube
Mercury is an opaque and shiny substance. Hence it is easily visible
Mercury has high boiling point. Hence, it can be used over a wide range of temperature.
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