A. Flow rate of the entering gas
B. Composition of the entering liquid
C. Terminal concentrations of gas stream
D. None of these
Related Mcqs:
- Co-current absorbers are usually used when the gas to be dissolved in the liquid is ___________________?
A. Sparingly soluble
B. Highly soluble
C. A pure substance
D. A mixture - Most important factor to be considered in the selection of packings for absorbers is the ______________ of packing?
A. Size
B. Durability
C. Porosity
D. Cost - Most important factor to be considered in the selection of packings for absorbers is the ______________ of packing?
A. Size
B. Durability
C. Porosity
D. Cost - For absorbers, high pressure drop results in___________________?
A. Increased efficiency
B. Decreased efficiency
C. High operating cost
D. Better gas liquid contact - For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be ___________________?
A. 1
B. 0
C. 2
D. 3 - Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?
A. Heat gain or loss
B. Flow rate of entering liquid
C. Flow rate of gas
D. None of these - Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be_________________?
A. 1
B. > 1
C. < 1
D. ≤ 1 - With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas________________?
A. Increases
B. Decreases
C. Decreases linearly
D. Remain unaffected - Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature) ?
A. log P vs. T
B. log P vs. log T
C. T vs. P
D. P vs. log T - Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are ?
A. 4
B. 8
C. 9
D. 10
