For absorbers, high pressure drop results in___________________?

Related Mcqs:

1. Which of the following is not fixed by the process requirements, in the design of absorbers ?

   A. Flow rate of the entering gas
   B. Composition of the entering liquid
   C. Terminal concentrations of gas stream
   D. None of these

2. 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

3. 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

4. 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

5. At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid _______________ that in dry packed tower ?

   A. Is greater than
   B. Is lower than
   C. Is same as
   D. Cannot be predicted as data are insufficient

6. Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty ?

   A. Grid tray tower
   B. Perforated tray tower
   C. Wetted wall tower
   D. Bubble cap tower

7. 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

8. 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

9. 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

10. Which of the following same diameter columns gives lowest pressure drop per unit height ?

    A. Bubble-cap column
    B. Sieve-plate column
    C. Packed column (stacked)
    D. Randomly packed column