Chemical Process Calculation

Phase diagrams and Phase Rule-II

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The liquid between the melting curve and the vapour pressure curve is Sub-cooled liquid.
False
True
Cannot be predicted for any material
None of the mentioned
Explanation:
The liquid between the melting curve and the vapour pressure curve is Subcooled liquid.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
The temperature at which the solid melts at 1 atm is called
Normal boiling point
Normal melting point
Normal freezing point
None of the mentioned
Explanation:
The temperature at which the solid melts at 1 atm is called Normal melting point.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The change of phase from liquid to solid is
Freezing
Evaporation
Sublimation
None of the mentioned
Explanation:
The change of phase from liquid to vapour is Freezing.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
The temperature at which a liquid will begin to boil at the standard atmospheric pressure is
Normal boiling point
Normal melting point
Normal freezing point
None of the mentioned
Explanation:
The temperature at which a liquid will begin to boil at the standard atmospheric pressure is Normal boiling point.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Values of vapour at temperature and pressure exceeding those at saturation is
Superheated vapour
Sub-cooled vapour
Below critical point vapour
None of the mentioned
Explanation:
Values of vapour at temperature and pressure exceeding those at saturation is Superheated vapour.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
The change of phase from liquid to vapour is
Condensation
Evaporation
Sublimation
None of the mentioned
Explanation:
The change of phase from liquid to vapour is Evaporation.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Saturated liquid or saturated vapour can be found
Along the liquid and vapour equilibrium curve
Along the liquid and solid equilibrium curve
Along the solid and vapour equilibrium curve
None of the mentioned
Explanation:
Saturated liquid or saturated vapour can be found along the liquid and vapour equilibrium curve.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The pressure along the melting curve is
Sublimation pressure
Saturation pressure
Condensation pressure
None of the mentioned
Explanation:
The pressure along the melting curve is Sublimation pressure.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Boiling occurs at ________ temperature and _______ pressure, the process appears as a point in ____ diagram.
Constant, constant, P-T
Variable, constant, P-T
Constant, variable, V-T
Variable, variable, V-T
Explanation:
Boiling occurs at constant temperature and constant pressure, the process appears as a point in P-T diagram.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Change in phase from solid to vapour
Melting
Boiling
Evaporation
Sublimation
Explanation:
Change in phase from solid to vapour is Sublimation.