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- Question
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
Options- A. laminar phase
- B. transient phase
- C. turbulent phase
- D. any of the phase
- Correct Answer
- turbulent phase
- 1. Trichoderma ?-glucanase is reported
Options- A. to stabilize mashing
- B. to convert taste fractions of dextrins to fermentable sugars in beer
- C. to convert starch to dextrin
- D. all of the above Discuss
- 2. The maximum desirable limit (BIS of mercury in the drinking water is
Options- A. 0.05 mg/l
- B. 0.9 mg/l
- C. 0.1 mg/l
- D. 0.001 mg/l Discuss
- 3. An ion exchange resin is composed of
Options- A. polymeric network
- B. ionic functional groups
- C. counter ions
- D. all of these Discuss
- 4. Which of the operation does not come under upstream processing?
Options- A. Media preparation
- B. Inoculum development
- C. Effluent treatment
- D. Storage of raw material Discuss
- 5. Which of the following is the commonly employed adsorbents?
Options- A. Calcium carbonate
- B. Alumina
- C. Celluloses
- D. All of these Discuss
- 6. When a culture of fermenting yeast becomes metabolically uncoupled, ethanol
Options- A. becomes a secondary metabolite
- B. production becomes growth associated
- C. production becomes non-growth associated
- D. becomes a growth nutrient Discuss
- 7. Which of the following would be best described as a radial flow impeller?
Options- A. An impeller with blades pitched at 45° to the vertical
- B. A Rushton turbine
- C. Both (a) and (b)
- D. An impeller which directs liquid flow towards the base of the reactor Discuss
- 8. A higher liquid height will lead to a higher gas hold up by which the oxygen transfer rate will be
Options- A. higher throughout the reactor
- B. lower throughout the reactor
- C. higher at the base of the reactor
- D. lower at the base of the reactor Discuss
- 9. A fed-batch reactor initially contains 2 litre of medium. If it was fed at 1 litre per hour, then after 10 hours, the volume of the reactor will be
Options- A. 1 litre
- B. 2 litre
- C. 3 litre
- D. 13 litre Discuss
- 10. Reynolds number for laminar flow over a plate should be less than
Options- A. 500 mm
- B. 5 x 10-5
- C. 5 x 105
- D. 5 m Discuss
More questions
Correct Answer: to stabilize mashing
Correct Answer: 0.001 mg/l
Correct Answer: all of these
Correct Answer: Effluent treatment
Correct Answer: All of these
Correct Answer: production becomes non-growth associated
Correct Answer: A Rushton turbine
Correct Answer: higher at the base of the reactor
Correct Answer: 2 litre
Correct Answer: 5 x 105
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