In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in
A). Reducing the axial mixing
B). Increasing the rate of extraction
C). Maintaining the concentration difference between the two phases
D). All of the above
The operating line for an absorber is curved, when plotted in terms of
A). Mole fractions
B). Mole ratios
C). Partial pressure
D). Mass fractions
Which of the following is an undesirable property for an absorbing solvent?
A). Low vapour pressure
B). Low velocity
C). Low freezing point
D). None of these
The minimum liquid rate to be used in an absorber corresponds to an operating line
A). Of slope = 1
B). Ofslope = 0.1
C). Tangential to the equilibrium curve
D). None of these
JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by
A). Nsh = 2
B). Nst = 2
C). Nsc = 2
D). None of these