Post-UTME Physics 2010 Objective — Question 2
Question 2 of 12 from the Post-UTME Screening (Post-UTME) Physics 2010 Objective paper, with the correct answer and a full explanation.
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Which of the following is NOT True about mercury as a thermometric liquid?
- A. It does not wet glass
- B. It is opaque and easily seen
- C. It can be used for extra low temperature down to -200 degrees CCorrect
- D. It is a good conductor of heat and responds rapidly to changes in temperature.
Explanation
Mercury freezes at about -39 degrees C, so it cannot be used for extra-low temperatures down to -200 degrees C - alcohol is used instead for such ranges.
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