Which of the following filled system expansion thermometer has the capability to measure the lowest temperature ?
Correct answer: C. Alcohol in glass thermometer
- A. Mercury in glass thermometer
- B. Mercury in steel thermometer
- C. Alcohol in glass thermometer
- D. Fused metal (Na or K) in steel thermometer
Explanation
Alcohol remains liquid at much lower temperatures than mercury, so an alcohol-in-glass thermometer is used for low-temperature measurement. Mercury thermometers are limited by mercury's relatively high freezing point.
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