Question

wtite two reason of using mercury in thermometer?​

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.

I hope it's help ful to you

Answer 2

Answer:

Because it is only substance which remains at room temperature.

It runs away from heat according to heat temperature