Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Agitation and Aeration Questions
Which have the maximum resistance while transferring carbon dioxide from the bulk liquid to an air bubble?
Penetration theory assumes that turbulent eddies travel from the bulk of the phase to the interface where they remain constant for a constant exposure time (te). The model correlating KL, mass transfer coefficient and DAB, diffusivity can be expressed as
Surface renewal theory predicts that the mass transfer coefficient is
Which of the following would be best described as an axial flow impeller?
Which of the following type(s) of stirrer can be used for microbiological processes?
Which of the following is most likely to cause an increase in the rate of oxygen transfer into a particular aerated fermentation system?
Which of the following will have the highest surface area available for oxygen transfer?
At 25°C, the saturation concentration of oxygen in water is 1.26 mmol/l and the partial pressure of oxygen is 1 atm. The Henry's law constant will be
The oxygen transfer rate in a bioreactor will increase if
Power number is expressed as
Which of the following impellers will provide radial flow?
The average concentration of oxygen in the boundary layers surrounding the bubbles (Co*) in a reactor is normally determined by
Which of the following best explains the reasons for using axial flow impellers in crystallization and precipitation reactions?
What is the ratio of depth of liquid in vessel to the diameter of tank (H:Dt)?
Power number is ratio of
Power consumption by agitation is
The reason of using a flat disk in a Turbine is
Why vortexing is undesirable in the agitation of biological systems?
The range of width for the baffle in the fermenter is __________ times of vessel diameter
Which of the following(s) is/are non-mechanically agitated reactors?
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