A vapor that exists above its critical temperature is termed as a _____________ vapor?

Related Mcqs:

1. The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the_____________________?

   A. Relative humidity
   B. Relative saturation
   C. Percentage saturation
   D. None of these

2. A vapor whose partial pressure is less than its equilibrium vapor pressure is called the _____________ vapor?

   A. Saturated
   B. Superheated
   C. Unsaturated
   D. Dry gaseous

3. A vapor whose partial pressure is less than its equilibrium vapor pressure is called a ______________ vapor?

   A. Saturated
   B. Supersaturated
   C. Superheated
   D. None of these

4. The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is_____________________?

   A. Termed as relative saturation
   B. Not a function of the composition of gas mixture
   C. Called percentage saturation
   D. Not a function of the nature of vapor

5. If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its___________________?

   A. Bubble point
   B. Saturation temperature
   C. Dew point
   D. Both B. and C.

6. The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg ?

   A. 0.2
   B. 0.1
   C. 0.4
   D. 0.6

7. The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vaporised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is_________________?

   A. 0.4
   B. 0.6
   C. 0.8
   D. 0.2

8. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?

   A. Nature of the liquid
   B. Nature of the gas
   C. Temperature of the liquid
   D. Total pressure

9. The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?

   A. Potential energy
   B. Intermolecular forces
   C. Kinetic energy
   D. Total energy

10. A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal______________?

    A. Kinetic energy
    B. Intermolecular forces of attraction
    C. Potential energy
    D. Total energy