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← ScienceWhich consequence results when a pure substance undergoes rapid volumetric heating approaching its critical point?
A)Supercritical fluid homogeneity increases drastically
B)Distinct phase transition becomes undefined✓
C)Heat transfer reaches its maximum point
D)Viscosity is minimized within fluid boundary
💡 Explanation
The distinct phase transition disappears because near the fluids critical point, liquid and gas phases have similar properties. The *critical opalescence* mechanism causes near-identical densities; therefore, a clear boiling point vanishes, rather than enhanced homogeneity, maximized heat, or minimized viscosity occurring.
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