The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = _________________?
A. 1
B. 0.5
C. 10
D. 0
Mass Transfer
The diffusivity D. in a binary gas mixture is related to the temperature (T) as________________________?
The diffusivity D. in a binary gas mixture is related to the temperature (T) as________________________?
A. D ∝ T
B. D ∝ T0.5
C. D ∝ T1.5
D. D ∝ T2
The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or “outgassed” adsorbent to from a definite concentration of adsorbate is called its_____________________?
The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or “outgassed” adsorbent to from a definite concentration of adsorbate is called its_____________________?
A. Integral heat of adsorption
B. Heat of wetting
C. Differential heat of adsorption
D. Heat of normal condensation
An Azeotropic mixture is a ________________ mixture?
An Azeotropic mixture is a ________________ mixture?
A. Binary
B. Ternary
C. Constant boiling point
D. None of these
Inside the distillation columns, the ________________________?
Inside the distillation columns, the ________________________?
A. Highest temperatures is near the feed plate
B. Driving force for the liquid flow is its weight
C. Vapors are not always at their dew points
D. All A., B. and C.
Total reflux in a distillation operation requires minimum____________________?
Total reflux in a distillation operation requires minimum____________________?
A. Reboiler load
B. Number of plates
C. Condenser load
D. All A., B. and C.
Boiling point diagram is not affected by the ambient______________________?
Boiling point diagram is not affected by the ambient______________________?
A. Pressure
B. Humidity
C. Temperature
D. Both B. and C.
Dry bulb temperature of unsaturated air is more than its ________________ temperature?
Dry bulb temperature of unsaturated air is more than its ________________ temperature?
A. Dew point
B. Wet bulb
C. Both A & B
D. Neither A nor B
Inside the distillation column, the________________________?
Inside the distillation column, the________________________?
A. Driving force for the vapour flow is the pressure drop
B. Liquids are not always at their bubble points
C. Pressure increases gradually from bottom to the top of the column
D. None of these
A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around _______________ °C?
A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around _______________ °C?
A. 21.7
B. 20
C. 27.3
D. 18.7