The most common packing used in industrial operations is _______________ rings?
A. Raschig
B. Lessing
C. Cross-partition
D. Single spiral
Mass Transfer
Capacity of a rotary dryer depends on its __________________?
Capacity of a rotary dryer depends on its __________________?
A. rpm
B. Inclination with ground surface
C. Both A. and B.
D. Neither A. nor B.
Berl saddle made of carbon cannot be used for ___________________?
Berl saddle made of carbon cannot be used for ___________________?
A. Alkalis
B. SO2
C. H2SO4
D. Oxidising atmosphere
For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of _______________ microns (1 mm = 1000 microns)?
For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of _______________ microns (1 mm = 1000 microns)?
A. 1-5
B. 10-60
C. 200-300
D. > 500
If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is___________________?
If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is___________________?
A. L/G
B. G/L
C. Always < 1
D. None of these
Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the _______________ number?
Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the _______________ number?
A. Schmidt
B. Sherwood
C. Peclet
D. Stanton
Physical absorption is__________________?
Physical absorption is__________________?
A. An irreversible phenomenon
B. A reversible phenomenon
C. Accompanied by evolution of heat
D. Both B. and C.
Ion exchange process is similar to___________________?
Ion exchange process is similar to___________________?
A. Absorption
B. Adsorption
C. Extraction
D. Leaching
Only small amount of evaporation of water produces large cooling effects because of its___________________?
Only small amount of evaporation of water produces large cooling effects because of its___________________?
A. Large latent heat
B. Low viscosity
C. Small latent heat
D. None of these
As the reflux ratio decreases, the_________________?
As the reflux ratio decreases, the_________________?
A. Separation becomes more efficient
B. Number of plates increases
C. Column diameter increases
D. None of these