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Home Biochemical Engineering Sterilization See What Others Are Saying!
  • Question
  • The efficiency of fibrous filter by combined mechanism is given by(where ?imp,?int,?dif are the efficiencies by impaction, interception and diffusion respectively)


  • Options
  • A. 1 - ?imp?int?dif
  • B. 1 - (1 - ?imp)(1 - ?int)( 1 - ?dif)
  • C. 1 - ( ?imp?int/?dif)
  • D. None of the above

  • Correct Answer
  • 1 - ?imp?int?dif 


  • More questions

    • 1. Which of the following affect the Kolmogorov eddy size?

    • Options
    • A. Stirrer speed
    • B. Physical properties of the liquid
    • C. Size and type of impeller
    • D. All of these
    • Discuss
    • 2. The mechanical means of accomplishing sterilization of fermentation media/equipment is

    • Options
    • A. ultrasonic
    • B. radiation
    • C. chemical agents
    • D. none of these
    • Discuss
    • 3. A noncompetitive inhibitor of an enzyme-catalyzed reaction

    • Options
    • A. increases KM and increases Vmax
    • B. increases KM and reduces Vmax
    • C. reduces KM and increases Vmax
    • D. reduces KM and reduces Vmax
    • Discuss
    • 4. Which of the following statement(s) regarding enzymes, is/are false?

    • Options
    • A. Enzymes are always proteins that function as catalysts
    • B. Enzymes provide activation energy for reactions
    • C. Enzyme activity can be regulated
    • D. Enzymes may be used many times for a specific reaction
    • Discuss
    • 5. The Monod Model relates

    • Options
    • A. substrate utilized with the biomass consumption
    • B. specific growth rate to the substrate availability
    • C. yield with the biomass utilization
    • D. the biomass concentration with specific growth rate
    • Discuss
    • 6. The advantage of axial flow impellers over radial flow impellers is that axial flow impellers

    • Options
    • A. provide better lift of solids
    • B. provide high shear conditions
    • C. provide low shear conditions
    • D. are cheaper to build
    • Discuss
    • 7. Which is not the method for producing immobilized enzymes with multifunctional reagents?

    • Options
    • A. Enzymes are adsorbed on the surface active support followed by intermolecular cross linking
    • B. Functional groups are introduced on the support to react co-valently with enzymes
    • C. Enzymes are cross linked intermolecularly
    • D. None of the above
    • Discuss
    • 8. Conventional tertiary treatment is

    • Options
    • A. chemical coagulation and flocculation
    • B. filtration
    • C. sedimentation
    • D. none of these
    • Discuss
    • 9. The bitter taste of the high protein materials is reduced by using

    • Options
    • A. invertase
    • B. dectinase
    • C. protease
    • D. none of these
    • Discuss
    • 10. The ultimate source of water is

    • Options
    • A. rivers and lakes
    • B. dew and forest
    • C. rain and snow
    • D. underground and surface
    • Discuss


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