A. Less than
B. More than
C. Equal to
D. None of these
Dry bulb temperature of the gas is _____________ the wet bulb temperature? Read More »
Mass Transfer A. Moles transferred/ [(time) (area) (mole fraction)]
B. Moles transferred/ [(time) (area) (mass A/mass B)]
C. Moles transferred/ [(time) (area) (pressure)]
D. None of these
Which of the following is not a unit of mass transfer co-efficient ? Read More »
Mass Transfer A. 1
B. ∞
C. 0.5
D. 2
A. High pressure
B. Low pressure
C. Extractive
D. Steam
Rose oil is extracted from rose leaves using ____________ distillation? Read More »
Mass Transfer A. Increases tray efficiency
B. Decreases tray efficiency
C. Reduces pressure drop
D. Is desirable, as it provides improved vapour-liquid contact
Back-trapping in a distillation column ? Read More »
Mass Transfer A. Cracks develop on the surface of the solid
B. Rate of drying decreases abruptly
C. Surface evaporation of unbound moisture occurs
D. None of these
A. 0 to 0.5
B. 0 to 3
C. 1.25 to 2
D. 5 to 15
The most economical range of absorption factor is____________________? Read More »
Mass Transfer A. Isothermal operation
B. Dilute solutions
C. Dilute solutions and isothermal operation
D. None of these
A. Is a static bed leaching equipment
B. Is used for extraction of oil from oilseed
C. Is a centrifugal extractor
D. Employs only counter-current extraction
Bollman extractor___________________? Read More »
Mass Transfer A. Solvent of low latent heat of vaporisation should be used
B. Solvent of low freezing point should be used
C. Large quantity of solvent is required to extract the solute
D. Very small quantity of solvent is required
When the solvent dissolves very little of solute, then__________________________? Read More »
Mass Transfer