In what ways are gas thermometers superior to mercury thermometers?

cbse
thermal-properties

#1

A gas thermometer is more superior to a mercury thermometer, as its working is independent of the nature of gas (working substance) used. As the variation of pressure (or volume) with temperature is uniform, the range, in which temperature can be measured with a gas thermometer is quite large. Further, a gas thermometer is more sensitive than mercury thermometer.