Category: Mass Transfer

A. Not possible in the second case unless vacuum is applied
B. Not possible in the second case unless high pressure is applied
C. More readily done in the second case compared to first one
D. None of these

A. Straight
B. Parallel
C. Both A. & B.
D. Neither A. nor B.

A. S > 1
B. S < 1
C. S = 1
D. S = ∞

A. 1
B. 0
C. ∞
D. None of these

A. Slope of the operating line in stripping section decreases
B. Number of plates decreases very slowly first and then more and more rapidly
C. Total cost first decreases and then increases
D. Liquid flow increases while the vapor flow decreases for a system

A. Drift
B. Blow down
C. Vapor load
D. None of these

A. Critical moisture content is not a property of the material itself
B. A sharp increase in pressure drop gives an indication of the flooding in a distillation column
C. Separation of components is not possible in liquid extraction, if selectivity is unity
D. Dehydration of ethyl alcohol is most economically done by molecular distillation at very high
vacuum

A. Size
B. Durability
C. Porosity
D. Cost

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

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