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Which of the following thermometers is used to measu...

Which of the following thermometers is used to measure the temperature of the human body?

A.

Thermocouple

B.

Alcohol-in-glass thermometer

C.

Gas thermometer

D.

Platinum resistance thermometer

Correct answer is B

The range of usefulness of the thermometer is set by the boiling point of the liquid used. In the case of the ethanol-filled thermometer, the upper limit for measurement is 78 °C (172.4 °F), which makes it useful for measuring daytime, nighttime and body temperatures, although not for anything much hotter than these.