Question

Mercury and Alcohol are two common liquids used in thermometers.
The boiling point of MERCURY is 3570C, while its freezing point is -390C
For ALCOHOL, the boiling point is 780C and the freezing point is -800C
It is required in a laboratory to make measurements which are in the region of -600C. Which type
of thermometer would be more suitable?

Answer 1

There is a technical reason for using mercury in clinical thermometers. Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change!!!!!!!

Answer 2

Answer:

Then alcohol based thermometer would be suitable or rather say should be used in the region of -600 degree centigrate because mercury would freeze but alcohol would not.