Question

Mercury thermometer is used to measure high temperature but alcohol thermometer is used to measure low temperature why

Answer 1

Answer:

To measure the minimum and maximum temperature in a day, Six's thermometer is used. It consists of a U-shaped capillary tube having bulbs at both ends. Mercury is filled in the bend of the U-tube.

Answer 2

Answer:

• Alcohol has a boiling point of 80 C whereas mercury reaches a temperature of 356.7 C. Alcohol cannot be used to gauge high temperatures due to its low boiling point. In chilly climates, it is mostly used.
• Because of its wide range of liquid temperatures, constant coefficient of thermal expansion, and strong thermal conductivity, mercury was frequently utilized in thermometers. However, because it risks human health, mercury is typically prohibited nowadays.

• Clinical thermometers use mercury for technical purposes. The coefficient of thermal expansion of mercury is higher than that of alcohol.
• This means that for a given temperature change, a column of mercury will rise and expand more than a column of alcohol. As a result, mercury allows for finer readings.