1. Match the preferred membrane module with applicationsFiltration of Milk for separation of Whey:Plate frameReverse Osmosis of Sea Water spiral wound(bore side)Gas separation Spiral wound or Hollowfibre/capillary(bore side)Pervaporation: hollow fibre shell side

2. Which of the following modules will you recommend forfouling feeds?Plate n frameNTubular

3. If the molecular weight of solute is low, then the changes in retention dueto concentration polarization will be?=Rejection will be lowered

4. Which of the following may not be a potentialreverse osmosis membrane materialPolystyrene-butadiene rubber

5. In which of the following modules will you encounter most pressure drop?=Hollow fibre module

6. Which of the following statements is not the reason, why gaskets in plate and frame filters have a tortuous path?=Increase area of filtration

7. Which membrane processes will require highest pressure?=Ultra filtration

8. Rejection of ammonium hydroxide will be higher at pH = 14 than at pH = 5? (pKa = 10.5)=False

9. Which of the following is not one of the reasons for failure of reverse osmosis systems?=High solvent concentration

10. Concentration polarization is least severe in which of the following applications=Pervaporation

11. Concentration polarization in membrane filtration can be reduced by=Increase velocity of feed

12. Which of the following modules employ flat sheet membranes?=plate n frame, spiral wound, hollow fibre module

13. Which of the following statements about concentration polarization is not related/untrue ?= Deposition of rejected particles and solutes in the membrane pores and membrane surface

14. What are the factors on which the rejection in reverse osmosis depends on?=all of the above

15. Solvent flux in reverse osmosis will not be dependent on?= area

16. Hemoglobin is a large molecule that carries oxygen in human blood. A water solution that contains 0.263 g of hemoglobin (Hb) in 10.0 mL of solution has an osmotic pressure of 7.51 torr at 25C. What is the molar mass of the haemoglobin?=65830

17. A RO hollow fiber membrane has a water permeability of Lpof 1.6 10-7m/s/bar. The external diameter is 0.1 mm. The manufacturer claims that the module flux at 60 bar and 298 K and seawater (3.0 wt% NaCl) as feed is qp= 5 m3/day. How many fibers are present in a module with a length of 1 m?= 33285(pg 544 pdf)

18. What is the osmotic pressure of solution containing 0.2 wt% NaCl and 3 wt % CaCl2?=19.95

19.