Related Mcqs:

1. Absorption accompanied by heat evolution results in____________________?

   A. Increased capacity of the absorber
   B. Increase in equilibrium solubility
   C. Decrease in equilibrium solubility
   D. None of these

2. An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is ?

   A. 9.21
   B. 4.605
   C. 100
   D. 0.001

3. ‘Absorption with chemical reaction’ is involved in the removal of__________________?

   A. Carbon dioxide from gaseous stream using alkaline solution
   B. Benzol from coke oven gas using solar oil/wash oil
   C. Ammonia from coke oven gas using refrigerated water
   D. Tar from coke oven gas in primary gas coolers using chilled water

4. In a gas-liquid absorption column, for obtaining the maximum absorption efficiency___________________?

   A. Liquid stream should be distributed uniformly
   B. Gas stream should be distributed uniformly
   C. Both gas as well as liquid streams should be distributed uniformly
   D. By passing should be completely avoided

5. In a gas-liquid absorption column, for obtaining the maximum absorption efficiency____________________?

   A. Liquid stream should be distributed uniformly
   B. Gas stream should be distributed uniformly
   C. Both gas as well as liquid streams should be distributed uniformly
   D. By passing should be completely avoided
   Answer: Option C

6. Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in_________________?

   A. Decreased solute solubility
   B. Large minimum liquid to gas (L/G) ratio
   C. Large number of trays
   D. All A., B. and C.

7. Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be_________________?

   A. 1
   B. > 1
   C. < 1
   D. ≤ 1

8. In the absorption of ammonia in water, the main resistance to absorption is by the _________________ phase?

   A. Liquid
   B. Gas
   C. Both A. & B.
   D. Neither A. nor B.

9. 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.

10. A minimum boiling azeotrope is exemplified by__________________________?

    A. Toluene-benzene
    B. Acetone-carbon disulphide
    C. Water-isobutyl alcohol
    D. None of these