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You Are On Multi Choice Question Bank SET 123

6151. Swirling and vortex formation can be prevented by





6152. Power number is expressed as





6153. The power consumption in a stirring vessel can be assessed by using a





6154. Surface renewal theory predicts that the mass transfer coefficient is





6155. The oxygen transfer rate in a bioreactor will increase if





6156. This is the place ...... I lost my bag





6157. If you tease the dog, it........... you





6158. He is.............FBI agent.





6159. Cache memory will be available:





6160. I can meet you tomorrow afternoon. I ..............





6161. Maintenance cost varies from





6162. The optimum wet solid content for the cell suspension for a bead mill is typically somewhere between





6163. Assuming the laminar flow across the filter, the rate of filtration (dVf/dt) can be expressed as a function of pressure drop Dp by the modified D'Arcy's equation as (where A is the area of filtering surface, K is the D'Arcy's filter cake permeability and L is the thickness of the filter cake)





6164. Filtration leaf test results indicate that the filtration rate of a protein product is 100 dry lbs/(ft2 hr). What size production filter would be required to obtain 100 dry lbs of filter cake/hr?





6165. Selectivity can be expressed as





6166. The disk centrifuge is the type of centrifuge used most often for bio separations due to its





6167. The effectiveness of a solvent can be measured by the





6168. The stage wise operation of adsorption is called





6169. Which of the following is not the physical method for the cells rupturing?





6170. Conventional adsorption is a





6171. If the solute passes through membrane freely, the the rejection coefficient (s) is





6172. If the membrane rejects all solute, the rejection coefficient (s) is





6173. In antibiotic manufacturing processes, the fermentation time ranges from





6174. The conventional filtration involves the separation of large particles generally





6175. Which of the operation does not come under upstream processing?





6176. For cost analysis in a fermentor system, the depreciation cost varies from





6177. Micro filtration refers to the separation of suspended material such as bacteria by using a membrane with spore sizes of





6178. Start up expenses in a fermentation industry varies from





6179. The solvent flux across the membrane can be expressed as (where A is the area, Lp is the membrane permeability, σ is the reflection point, Δp is applied pressure and Δπ is the osmotic pressure)





6180. Which of the following is considered as a pretreatment to the biological feeds?





6181. For the extractions operation, the selectivity should be





6182. The purity of a solute collected between two times t1 and t2 during chromatographic separation can be calculated as





6183. Chromatography is based on the





6184. The correlation often employed to correlate adsorption data for protein is (where Ymax is the maximum amount of solute adsorbed per mass of adsorbent, X is the mass fraction of solute in the diluent phase in solute-free basis, KL is a constant and Y is the equilibrium value of the mass of solute adsorbed per mass of adsorbent)





6185. A typical tubular centrifuge has a bowl of 2 to 5 inch in diameter and 9 to 30 inch in height with a maximum rotating speed of





6186. Concentration polarization can be reduced further by





6187. A system which require less solvent and produces a more concentrated extract phase, is desired with a





6188. The efficiency of cell disruption in a bead mill depends on the





6189. A common filter medium is the cloth filter generally made of





6190. An ion exchange resin is composed of





6191. Kernal is the program which interact with :





6192. One of my teachers ............. a famous novelist.





6193. John failed in the examination, but his sister ______





6194. She hasn’t written to me _____ we met last time.





6195. I prefer coffee.............tea





6196. The bitter taste of the high protein materials is reduced by using





6197. Sulphydryl oxidase is used for





6198. α-amylase is an endo enzyme which requires





6199. Liquefaction of starch to dextrin is carried out by





6200. Which is true about rennet?





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