Why mercury is used in barometer
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mercury is the only non metal which is in liquisld state and it is the only metal whose tempratuelre rises when the outer temperature rises and decrease when the outer temperature decrease that's why mercury is used in barometer
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Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure. A barometer using water, for instance, would need to be 13.6 times taller than a mercury barometer to obtain the same pressure difference.........
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