A. Grid tray tower
B. Perforated tray tower
C. Wetted wall tower
D. Bubble cap tower
Related Mcqs:
- Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in ______________ tower?
A. Wetted wall
B. Bubble cap
C. Perforated tray
D. Packed - Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty ?
A. Sieve plate column
B. Bubble cap column
C. Randomly packed column
D. Wetted wall column - Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is _______________ the liquid head available in the downcomer?
A. Less than
B. More than
C. Same as
D. Very much less - The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same system is_______________________?
A. 100
B. 10
C. 5
D. 1 - 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 - Which of these columns incurs the lowest pressure drop ?
A. Packed column (with stacked packing)
B. Packed column (with dumped packing)
C. Bubble plate column
D. Pulse column - In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as ___________________ ?
A. KG = 1/KG + m/KL
B. 1/KG = 1/KG + m/KL
C. 1/KG = 1/KL + m/KG
D. KG = 1/KL + m/KG - For contacting a highly soluble gas with a liquid ____________________?
A. Bubble the gas through liquid
B. Spray the liquid on gas stream
C. Either A. or B. would suffice
D. None of these - 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 - Pressure drop through plate tower as compared to that through packed tower, for the same duty will be___________________?
A. Less
B. More
C. Equal
D. Either A. or B.; depends on the packing height
