Liquids, Solids, and Phase Transitions
A phase diagram illustrates the physical state of a substance with respect to the temperature and the pressure of the surroundings. The points plotted to draw the phase diagram are derived experimentally, and are usually plotted with temperature on the x-axis and pressure on the y-axis. A typical phase diagram is shown below in Figure-1.
The point marked 'X' in the phase diagram given in the passage is called:
A The critical point B The maximum point C The triple point D The critical pressure point