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- Question
Newtonian fluid is one in which the viscosity
Options- A. remains constant with time and power input
- B. increases with the level of power input
- C. decreases with the level of power input
- D. drastically increases with the level of power input
- Correct Answer
- remains constant with time and power input
- 1. The conventional filtration involves the separation of large particles generally
Options- A. dp>5?m
- B. dp>10?m
- C. dp>15?m
- D. dp>20?m Discuss
- 2. The maximum specific growth rate (?m) of an organism in batch culture is equal to slope of a plot of
Options- A. In [biomass] against time for exponential phase data only
- B. In [biomass] against time
- C. biomass against time
- D. biomass against time for stationary phase data only Discuss
- 3. Which of the following substances are commonly used in a filter?
Options- A. Charcoal
- B. Sand
- C. Both (a) and (b)
- D. Aluminum chloride Discuss
- 4. The relationship between Keq, Km and Vmax is known as
Options- A. Haldane equation
- B. Michaelis Menten equation
- C. Numerical solution approach
- D. Gibbs-Helmholtz equation Discuss
- 5. The optimum wet solid content for the cell suspension for a bead mill is typically somewhere between
Options- A. 5-15% by volume
- B. 15-30% by volume
- C. 30-60% by volume
- D. 60-90% by volume Discuss
- 6. Analogus to the molecular diffusion, the x-directional flux of microorganisms suspended in a medium due to the axial mixing can be represented as (where Jn is flux component 'n', cn is concentration of'n')
Options- A. Jn = -dcn/dx
- B. Jn = dcn/dx
- C. Jn = -D dcn/dx
- D. Jn = D dcn/dx Discuss
- 7. The filter material used for air filtration system is/are
Options- A. glass wool
- B. glass fibre
- C. norite
- D. all of the above Discuss
- 8. Glass fibers are favorable as a filter medium because they give a
Options- A. lower pressure drop and are less liable to wetting or combustion
- B. more pressure drop and are less liable to wetting or combustion
- C. lower pressure drop and are more liable to wetting or combustion
- D. more pressure drop and are more liable to wetting or combustion Discuss
- 9. The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
Options- A. dp/Dc
- B. dp x Dc
- C. dp/Dc x 100
- D. dpDc/100 Discuss
- 10. Which of the following best explains the reasons for using axial flow impellers in crystallization and precipitation reactions?
Options- A. Crystal and precipitates are not too small, so as to ensure easy separation of the solids from the mother liquor
- B. Crystals and precipitates are thoroughly broken down, so as to ensure easy separation of the solids from the mother liquor
- C. Both (a) and (b)
- D. Axial flow impellers provide low shear, energy efficient mixing conditions Discuss
More questions
Correct Answer: dp>10?m
Correct Answer: In [biomass] against time for exponential phase data only
Correct Answer: Both (a) and (b)
Correct Answer: Haldane equation
Correct Answer: 30-60% by volume
Correct Answer: Jn = -D dcn/dx
Correct Answer: all of the above
Correct Answer: lower pressure drop and are less liable to wetting or combustion
Correct Answer: dp/Dc
Correct Answer: Crystal and precipitates are not too small, so as to ensure easy separation of the solids from the mother liquor
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