At the critical point of a substance
A. The surface tension vanishes
B. Liquid and vapour have the same density
C. There is no distinction between liquid and vapour phases
D. All of the above
Answer: Option D
Solution(By Examveda Team)
A critical point is a point where the physical distinction between the liquid and vapor vanishes since there will be no further difference in properties like surface tension, volume, density etc. Between the liquid and vapor. So we call the state of substance at and above the critical point as gas.Related Questions on Chemical Engineering Thermodynamics
A. Maxwell's equation
B. Thermodynamic equation of state
C. Equation of state
D. Redlich-Kwong equation of state
Henry's law is closely obeyed by a gas, when its __________ is extremely high.
A. Pressure
B. Solubility
C. Temperature
D. None of these
A. Enthalpy
B. Volume
C. Both A & B
D. Neither A nor B
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