Which of the following equipments is not used for liquid dispersion ?

Related Mcqs:

1. Which of the following equipments is not used for gas dispersion ?

   A. Agitated vessels
   B. Bubble cap tray towers
   C. Perforated sieve tray towers
   D. Spray towers

2. Which of the following equipments is not used in liquid-liquid extraction ?

   A. Pachuka tank
   B. Agitated vessels
   C. Centrifugal extractors
   D. Packed towers

3. The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3)_________________?

   A. 500
   B. 1200
   C. 900
   D. 800

4. The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3) ?

   A. 500
   B. 1200
   C. 900
   D. 800

5. _______________ columns are used for liquid dispersion in a continuous gas phase ?

   A. Packed
   B. Pulse
   C. Bubble cap
   D. Sieve plate

6. 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

7. 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

8. 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

9. In liquid-liquid extraction, the number of phases at plait point is __________________?

   A. 1
   B. 2
   C. 3
   D. 4

10. ______________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction ?

    A. Packed
    B. Bubble
    C. Spray
    D. Tray