Related Questions

In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.
A Total
B Minimum
C Operating
D Maximum permissible
As the reflux ratio increases, the slope of the operating line for rectifying section
A Increases
B Decreases
C Remains constant
D Data insufficient, cannot be predicted
What is the slope of the operating line in the rectifying section of a distillation coloumn?
A 0
B ∞
C > 1
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.
A 1.1 to 1.5
B 1.6 to 2
C 2.2 to 2.6
D 2.7 to 3
In rectifying section of a continuous distillation column, the
A Vapour is enriched with low boilers
B Vapour is enriched with high boilers
C Liquid is stripped of high boilers
D None of these
The operating cost of a distillation column at minimum reflux ratio is
A Minimum
B Maximum
C Infinite
D Zero
A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,
A Composition of vapors and that of liquid do not vary throughout the column
B Reboiler load and condenser load are minimum
C The top and bottom compositions are unchanged with and without total reflux
D The top and bottom compositions correspond to the maximum enrichment available
For a distillation column operating at minimum reflux, the
A Concentration of liquid and vapour leaving a plate will be same
B Reflux ratio will be maximum
C Number of plates required will be maximum
D None of these
What is the slope of the operating line in the stripping section of a distillation column?
A 0
B $$\infty $$
C > 1
Minimum reflux ratio in a distillation column results in
A Optimum no. of trays
B Minimum reboiler size
C Maximum condenser size
D Minimum number of trays

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