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Category: Mass Transfer
The humid volume may be increased by increasing the____________________?
A. Temperature at constant humidity
B. Humidity at constant temperature
C. Both A. and B.
D. Neither A. nor B.
Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component ‘A’ to that of component ‘B’, when_________________?
A. Only vapor phase follows Raoult’s law
B. Only liquid phase obeys Dalton’s law
C. Liquid phase obeys Dalton’s law and vapor phase obeys Raoult’s law
D. Vapor phase obeys Dalton’s law and liquid phase obeys Raoult’s law
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
As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages_______________________?
A. Increase
B. Decrease
C. Remain unchanged
D. Can either increase or decrease, depends on the system
With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent______________________?
A. Increases
B. Decreases
C. Remain same
D. Either A. or B., depends on the system
The minimum number of theoretical plates is required for achieving a given separation in distillation column with_________________?
A. No reflux
B. Total reflux
C. Zero reflux ratio
D. Minimum reflux ratio
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the ________________ temperature?
A. Dry-bulb
B. Wet-bulb
C. Dew point
D. Adiabatic saturation
Molecular sieves are porous____________________?
A. Alumina
B. Silica
C. Synthetic zeolites crystals/metal alumino-silicates
D. None of these
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