Category: Mass Transfer

A. Equilibrium
B. Critical
C. Unbound
D. Bound

A. < 1 and ≈ 1
B. 1 and 0
C. > 1 and ≈ 1
D. 0 and ≈ 1

A. Decreased liquid viscosity
B. Increased diffusivity
C. Both A. and B.
D. Neither A. nor B.

A. Increases
B. Decreases
C. Remain unaffected
D. Passes through a maximum

A. Change in barometric pressure does not affect the relative humidity
B. In case of a packed tower, the operating velocity is about half of the flooding velocity,
generally
C. ‘Elution’ means the desorption of the adsorbed solute by a solvent
D. The equilibrium moisture content of the solid can be reduced by increasing the absolute
humidity

transfer operations.
A. Sherwood number in mass transfer is analogous to Nusselt number in heat transfer
B. Prandtl number in heat transfer is analogous to Schmidt number in mass transfer
C. Reynolds number in mass transfer is analogous to Grashoff number in heat transfer
D. Reynolds number remains the same in both heat and mass transfer

A. Integral heat of adsorption
B. Heat of wetting
C. Differential heat of adsorption
D. Heat of normal condensation

A. Increase
B. Decrease
C. Remain same
D. Data insufficient, can’t be predicted

A. D ∝ P0.5
B. D ∝ 1/P0.5
C. D ∝ 1/P
D. D ∝ 1/P1.5

A. Ponchon-Savarit method
B. McCabe-Thiele method
C. Enthalpy concentration method
D. Tray to tray calculations