A. S > 1
B. S < 1
C. S = 1
D. S = ∞
Related Mcqs:
- In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed____________________?
A. q > 1
B. q < 1
C. q = 1
D. q = 0 - In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of _______________ is zero?
A. Interface
B. Gas phase
C. Liquid phase
D. All A , B. & C. - Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 × 10-3 kg mole/m2.s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m2 .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is _________________________?
A. 5.6 × 10-4
B. 8.5 × 10-4
C. 5.6 × 10-3
D. 8.5 × 10-3 - With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop___________________?
A. Decreases
B. Remains unchanged
C. Increases
D. Decreases exponentially - The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an _________________ law?
A. Exponential
B. Parabolic
C. Linear
D. Cubic - The reciprocal of stripping factor is termed as ________________________?
A. Selectivity index
B. Relative volatility
C. Absorption factor
D. Murphree efficiency - For stripping of a gas in a counter current stripper, the operating line _____________________?
A. Lies above the equilibrium curve
B. Lies below the equilibrium curve
C. Can lie above or below the equilibrium curve
D. Is always parallel to the equilibrium curve - In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at ________________ reflux ?
A. Total
B. Minimum
C. Operating
D. Maximum permissible - 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 - The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will______________________?
A. Increase
B. Decrease
C. Remain same
D. Depend on saturated boiling point; may increase or decrease
