Which metal is commonly used in thermometers due to its property of expanding according to change in temperature?

Cadmium

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Calcium

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Magnesium

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Mercury

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Solution

The correct option is D
Mercury

Mercury is filled in the thermometer and provided with a temperature scale aside it. Since mercury is a transition metal that exists as a liquid at room temperature. Mercury has the ability to expand with the slightest change in temperature thus providing accurate measurements on temperature.

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