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.Management Sciences
Category: Mass Transfer
Dry bulb temperature of unsaturated air is more than its ________________ temperature?
A. Dew point
B. Wet bulb
C. Both A & B
D. Neither A nor B
Channelling in a packed tower results from the_____________________?
A. High pressure drop
B. Maldistribution of liquid
C. Non-uniformity of packing
D. Both B. and C.
Critical humidity of a solid salt means the humidity_____________________?
A. Above which it will always become damp
B. Below which it will always stay dry
C. Both A. and B.
D. Above Which it will always become dry and below which it will always stay damp
In a gas-liquid absorption column, 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
Freundlich equation applies to the adsorption of solute from___________________?
A. Dilute solutions, over a small concentration range
B. Gaseous solutions at high pressure
C. Concentrated solutions
D. None of these
Adsorption is a unit operation which generally involves _______________ systems?
A. Liquid-solid
B. Gas-solid
C. Fluid-solid
D. Solid-solid
Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty ?
A. Sieve plate column
B. Bubble cap column
C. Randomly packed column
D. Wetted wall column
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