Related Questions

In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter
A > 4 :1
B > 8:1
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.
A Molal flow rate of vapour
B Vapour molecular weight
C Pressure and temperature
D All of the above
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.
A $${\frac{1}{5}^{{\text{th}}}}$$
B $${\frac{1}{{15}}^{{\text{th}}}}$$
C $${\frac{1}{{30}}^{{\text{th}}}}$$
D $${\frac{1}{{50}}^{{\text{th}}}}$$
Stacked packing compared to dumped packing
A Provides poorer contact between the fluids
B Gives lower pressure drop
C Both A & B
D Gives higher pressure drop
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.
A Greater than
B Smaller than
C Equal to
D Either A, or B ; depends on the type of packing
Which of the following is an undesirable property in a tower packing?
A Large surface per unit volume
B Large free cross-section
C Low weight per unit volume
D Large weight of liquid retained
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is
A [

A.

B.

B > 7
C > 20
In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.
A 25-50
B 50-75
C 200-250
D 750-1000
The correct combination of the following groups of sentences "The boy climbed up to the top of the tower. The tower was steep and tall. The boy was my younger brother. There was none other" would be --
A The boy having climbed up to the top, steep tower was my younger brother
B The boy who climbed up to the top, steep tower was my younger brother
C The boy who climbed up to the tall tower all alone was my younger brother
D The boy climbing the top, steep tower was my younger brother
A boy is standing at the top of the tower and another boy is at the ground at some distance from the foot of the tower, then the angle of elevation and depression between the boys when both look at a each other will be-
A Equal
B Angle of elevation will be greater
C Cannot be predicted for relation
D Angle of depression will be greater

Next steps