Question

if water is heated at the supercritical pressure (> 221.2 bar) (a) there will be no flashing of liquid to vapour (b) the saturation temperature is always 374.15ðc (c) it will always remain in liquid phase (d) there will be no bubble formation

Answer 1

The answer is D. That is if water is heated at the supercritical pressure (> 221.2 bar) then there will be no bubble formation.

As, pressure is greater than 221.2 bar, at this pressure water will be instantly converted to steam and there will be no bubbling.

This pressure and conversion is achieved through supercritical steam generators, that are used for electric power generation. They consume slightly less fuel and hence are more environment friendly.