A. Packed towers
B. Plate towers
C. Spray towers
D. Wetted wall columns
Related Mcqs:
- Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2. hr. The equilibrium data is represented by Y = 3X2 , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is_________________________?
A. 25%
B. 50%
C. 70%
D. 90% - With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system) ?
A. Increases
B. Decreases
C. Remain unaffected
D. Increases Linearly - In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas solute C is soluble in both the solvents. The extraction process attains equilibrium. The equilibrium relationship between the two phases is Y* = 0.9X, where Y* is the kg of C/kg of B and X is kg of C/kg of A. Choose the correct answer?
A. The entire amount of C is transferred to solvent B
B. Less than 2 kg but more than 1 kg of C is transferred to solvent B
C. Less than 1 kg of C is transferred to B
D. No amount of C is transferred to B - Extraction of penicillin employs a ________________ extraction column?
A. Centrifugal
B. Packed
C. Plate
D. None of these - Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when____________________?
A. Extracting solvent is cheaply & abundantly available
B. One of the liquid components is heat sensitive
C. Viscosity of liquid components is very high
D. One of the liquid components has very high affinity towards the solvent - 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 - Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in_________________?
A. Decreased solute solubility
B. Large minimum liquid to gas (L/G) ratio
C. Large number of trays
D. All A., B. and C. - Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be_________________?
A. 1
B. > 1
C. < 1
D. ≤ 1 - Absorption accompanied with chemical reaction is exemplified by the absorption of___________________?
A. Ammonia in water
B. Benzol present in coke oven gas by wash oil
C. SO2 in alkaline solution
D. All A., B. and C. - In the absorption of ammonia in water, the main resistance to absorption is by the _________________ phase?
A. Liquid
B. Gas
C. Both A. & B.
D. Neither A. nor B.