Biochemical Engineering - Fluid Flow

Exercise : Fluid Flow - Section 1
  • Fluid Flow - Section 1
6.
Bubble free aeration systems requires
silicone tubing or gas permeable membranes to facilitate gas transfer
carbon dioxide instead of air to supply oxygen
silicone tubing or gas permeable membranes to remove carbon dioxide by oxygen in the form of hydrogen peroxide
filled headspace of the reactor with carbon dioxide
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Non-linear relationship between shear stress and shear rate exists in
newtonian fluids
non-newtonian fluids
both (a) and (b)
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
If the viscosity of a fluid decreases with increasing stirrer speed, then the nature of the fluid is
newtonian
pseudoplastic
dilatant
thixotropic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
A pseudoplastic fluid is one in which the viscosity
is constant regardless of the stirrer speed or mixing time
changes during mixing but returns to its original state after mixing
increases with increasing stirrer speed
decreases with increasing stirrer speed
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
A viscoelastic fluid is one in which the viscosity
is constant regardless of the stirrer speed or mixing time
changes during mixing but returns to its original state after mixing
increases with increasing stirrer speed
decreases with increasing stirrer speed
Answer: Option
Explanation:
No answer description is available. Let's discuss.