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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

Correct Answer: Filling nitrogen under pressure in the stem

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Process Control And Instrumentation MCQ: 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 | Extra Education