JAMB Physics 2010 Objective — Question 15
Question 15 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2010 Objective paper, with the correct answer and a full explanation.
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15. One special advantage of alcohol over mercury as a thermometric liquid is its A. low freezing point B. low boiling point C. high specific heat capacity D. low density
- A. low freezing pointCorrect
- B. low boiling point
- C. high specific heat capacity
- D. low density
Explanation
An advantage of mercury over alcohol as a thermometric liquid is high boiling point (357C, versus alcohol's meagre 78C). Also, alcohol has its own advantage over mercury as a thermometric liquid since mercury freezes at -112C. This makes an alcohol-in-glass thermometer suitable for measuring extremely low temperature values, whereas mercury-in-glass thermometer can't be so used.
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