A. Concentrated solution and non-isothermal operation
B. Dilute solution and non-isothermal operation
C. Dilute solution and isothermal operation
D. Concentrated solution and isothermal operation
Related Mcqs:
- For a single component absorber, the operating line is straight only when plotted in term of ______________ units?
A. Partial pressure
B. Mole ratio
C. Mole fraction
D. None of these - The operating line for an absorber is curved, when plotted in terms of _______________________?
A. Mole fractions
B. Mole ratios
C. Partial pressure
D. Mass fractions - H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?
A. 2.0
B. 1.56
C. 1.0
D. 0.56 - 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 - The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is_____________________?
A. 0
B. ∞
C. -ve
D. +ve - The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is__________________?
A. 0
B. ∞
C. -ve
D. +ve - When both the fluids flow concurrently in an absorber, the slope of the operating line is____________________?
A. -ve
B. +ve
C. 1
D. -1 - 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 - In case of absorption, both the operating and equilibrium lines will be straight for______________?
A. Isothermal operation
B. Dilute solutions
C. Dilute solutions and isothermal operation
D. None of these - In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG ______________ the absorption factor?
A. Increases with increase in
B. Is one at unity value of
C. Both A. and B.
D. Neither A. nor B.
