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What is the temperature of the triple point of water on the Celsius scale?
Question

What is the temperature of the triple point of water on the Celsius scale?

A.

0°C

B.

-273.15°C

C.

100°C

D.

0.01°C

Correct option is D

S. Ans. (D)

Sol.

  • The triple point of water is the temperature and pressure at which water coexists in its solid, liquid, and gas phases in equilibrium.
  • The temperature of the triple point of water on the Celsius scale is 0.01°C.

The correct answer is (D) 0.01°C.

Information Booster:

  • The triple point of water is a fundamental concept in thermodynamics and is used to define the Kelvin scale.
  • The triple point temperature of water is a precise reference point used in the definition of the Kelvin unit.
  • It occurs at a specific pressure of approximately 611.657 pascals.
  • The triple point of water is used in the establishment of standard scientific measurements and is a key calibration point for thermometers.

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