Home⇒ Medical Science⇒ Bochemical Engineering⇒ Fluid flow
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The viscosity of water at STP is approximately 0.001 kg.m-1.s-1 [other wrong options] [Discuss in forum] |
| Q2 ⇒ In sparged mammalian cell bioreactors, the cell damage is caused because of shear stress arising during mixing of the cell culture fluid [other wrong options] [Discuss in forum] |
| Q3 ⇒ A liquid is flowing at 11,400 l.h-1 along a pipeline having a diameter of 4 cm. If the liquid has a density of 1 g.ml-1 and viscosity of 0.001kg.m-1.s-1, then the liquid would be in the turbulent phase [other wrong options] [Discuss in forum] |
| Q4 ⇒ Which pattern of mixing is preferred in stirred tank reactors during the culture of aerobic microorganisms? turbulent flow [other wrong options] [Discuss in forum] |
| Q5 ⇒ Reynolds number for laminar flow over a plate should be less than 5 x 105 [other wrong options] [Discuss in forum] |
| Q6 ⇒ Reynolds number for turbulent flow over a plate should be more than 106 [other wrong options] [Discuss in forum] |
| Q7 ⇒ A fluid in which the viscosity decreases with increasing stirrer speed and mixing time, can be represented as pseudoplastic, thixotropic fluid [other wrong options] [Discuss in forum] |
| Q8 ⇒ In animal cell bioreactor, bubble damage can be minimized by all of the above [other wrong options] [Discuss in forum] |
| Q9 ⇒ Water is a newtonian fluid [other wrong options] [Discuss in forum] |
| Q10 ⇒ The medium will have the highest viscosity (considering that the cells do not secrete gums) with the presence of filamentous fungi that grow as long poorly branched chains [other wrong options] [Discuss in forum] |
| Q11 ⇒ A thixotropic fluid is one in which the viscosity decreases with mixing time [other wrong options] [Discuss in forum] |
| Q12 ⇒ The Komologorov eddy size decreases with stirrer speed [other wrong options] [Discuss in forum] |
| Q13 ⇒ Filamentous fungal cells are more shear sensitive than bacterial cells because of all of the above [other wrong options] [Discuss in forum] |
| Q14 ⇒ The viscosity of a fluid changes with either stirrer speed or mixing time. But when mixing ceases, the viscosity returns to its original state. This fluid is best described as viscoelastic [other wrong options] [Discuss in forum] |
| Q15 ⇒ Which of the following affect the Kolmogorov eddy size? All of these [other wrong options] [Discuss in forum] |
| Q16 ⇒ A Newtonian fluid is one in which the viscosity is constant regardless of the stirrer speed or mixing time [other wrong options] [Discuss in forum] |
| Q17 ⇒ Newtonian fluid is one in which the viscosity remains constant with time and power input [other wrong options] [Discuss in forum] |
| Q18 ⇒ Pluronic F68 protects mammalian cells from damage stems as it is a/an surface active agent which stabilizes foams [other wrong options] [Discuss in forum] |
| Q19 ⇒ Which of the following describes the detrimental effect of bubbles on animal cells? Both (a) and (b) [other wrong options] [Discuss in forum] |
| Q20 ⇒ Mixing in stirred tank reactors can be described as either laminar, transient or turbulent [other wrong options] [Discuss in forum] |
| Or |