Related Questions

The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
A 0
B ∞
C 1
D Minimum
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
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
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
At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.
A Operating
B Total
C Minimum
D Maximum permissible
As the reflux ratio in a distillation coloumn is increased from the minimum, the
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
What is the slope of the operating line in the stripping section of a distillation column?
A 0
B $$\infty $$
C > 1
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
A 45
B 60
C 80
D 95
In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency
A Liquid stream should be distributed uniformly
B Gas stream should be distributed uniformly
C Both gas as well as liquid streams should be distributed uniformly
D By passing should be completely avoided
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.
A $${\frac{1}{{10}}^{{\text{th}}}}$$
B $${\frac{1}{{20}}^{{\text{th}}}}$$
C $${\frac{1}{{30}}^{{\text{th}}}}$$
D $${\frac{1}{{50}}^{{\text{th}}}}$$

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