5309Chemical EngineeringMedium
Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by________?
AUsing steel tube in place of glass tube
BAccounting for the tube expansion
CFilling nitrogen under pressure in the stem
DIncreasing the diameter of the tube
Correct answer
C. Filling nitrogen under pressure in the stem
Explanation
The correct answer is Filling nitrogen under pressure in the stem.