The triple point is a line on the p-V diagram, where all the three phases, solid, liquid and gas exist.

Related MCQs

• Triple point of a pure substance is a point at which
• At a pressure below the triple point line,
• When the temperature of a liquid is less than the saturation temperature at the given pressure, the liquid is called compressed liquid.
• Which of the following curves meet at triple point?
• The internal energy of saturated water at the triple point is
• The entropy of saturated water is chosen to be zero at triple point.
• At the triple point, l(sublimation) = l(vaporization) – l(fusion).
• The slope of sublimation curve is          the slope of the vaporization curve at triple point.
• An application requires R-12 at −140°C. The triple-point temperature is −157°C. Find the pressure of the saturated vapour at the required condition.
• The magnitude of Z at a particular pressure and temperature indicates the extent of deviation of the gas from the ideal gas behaviour.