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Which thermometer is used to indicate the lowest temperature ?

  • A.Gas thermometer
  • B.Clinical thermometer
  • C.Resistance thermometer
  • D.Alcohol thermometer

Answer: D

The alcohol thermometer reads the lowest temperatures. Alcohol freezes at about −115°C, so it stays liquid far below mercury, which freezes at −39°C.

This is why alcohol thermometers are used in polar and high-altitude conditions, usually with the alcohol dyed red to make it visible.

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