. Why is mercury used in thermometers?
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Explanation:
mercury is only metal which is liquid state only on room temperature.it has high coefficent of expansion.hence the temparature is notable in thermometer. it has high boiling point hence it is suitable to measure highet temperatures
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Answer: Mercury is commonly used in thermometers because
• It shows a 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 a high boiling point. Therefore, it can be used over a wide range of temperature
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