Process Control & Instrumentation Mcqs for Chemical


Q.  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__________________?

a. Filling nitrogen under pressure in the stem
b. Increasing the diameter of the tube
c. Using steel tube in place of glass tube
d. Accounting for the tube expansion


ANSWER: See Answer
 
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