Why is mercury preferred in thermometer?
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- because mercury is not sticky.
- it is opaque and shiny so it is easily visible.
- it remains in the liquid state in every temperature.
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Explanation:
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion which means it expands when temperature is high and contracts at low temperature also the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.
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