Question

why mercury is preferred in the thermometer measurements of temperature five reson?
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Answer 1

Answer:

Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. ... Hence, 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.

Answer 2

See mercury is metal so It has property of thermal expansion.

It is easily available.

It is liquid in Nature.

It is expands at really low temperature.

It can be stored easily and doesn't react with glass.