Home⇒ Medical Science⇒ Bochemical Engineering⇒ Downstream processing
| 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 efficiency of cell disruption in a bead mill depends on the all of these [other wrong options] [Discuss in forum] |
| Q2 ⇒ The effectiveness of a solvent can be measured by the both (a) and (b) [other wrong options] [Discuss in forum] |
| Q3 ⇒ For cost analysis in a fermentor system, the depreciation cost varies from 6-10% of the capital cost [other wrong options] [Discuss in forum] |
| Q4 ⇒ 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 15,000 to 50,000 rpm [other wrong options] [Discuss in forum] |
| Q5 ⇒ 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? 1.54 ft2 [other wrong options] [Discuss in forum] |
| Q6 ⇒ In antibiotic manufacturing processes, the fermentation time ranges from 4-5 weeks [other wrong options] [Discuss in forum] |
| Q7 ⇒ The purity of a solute collected between two times t1 and t2 during chromatographic separation can be calculated as amount of solute eluted / amount of impurity eluted [other wrong options] [Discuss in forum] |
| Q8 ⇒ The optimum wet solid content for the cell suspension for a bead mill is typically somewhere between 30-60% by volume [other wrong options] [Discuss in forum] |
| Q9 ⇒ If the solute passes through membrane freely, the the rejection coefficient (s) is 0 [other wrong options] [Discuss in forum] |
| Q10 ⇒ Which of the following is considered as a pretreatment to the biological feeds? All of the above [other wrong options] [Discuss in forum] |
| Q11 ⇒ 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) (1/A) dVf/dt = Δp/μ(L/K) [other wrong options] [Discuss in forum] |
| Q12 ⇒ If the membrane rejects all solute, the rejection coefficient (s) is 1 [other wrong options] [Discuss in forum] |
| Q13 ⇒ For the extractions operation, the selectivity should be > 1 [other wrong options] [Discuss in forum] |
| Q14 ⇒ Maintenance cost varies from 4-8% of the capital cost [other wrong options] [Discuss in forum] |
| Q15 ⇒ A common filter medium is the cloth filter generally made of all of these [other wrong options] [Discuss in forum] |
| Q16 ⇒ Conventional adsorption is a reversible process [other wrong options] [Discuss in forum] |
| Q17 ⇒ A system which require less solvent and produces a more concentrated extract phase, is desired with a large distribution coefficients [other wrong options] [Discuss in forum] |
| Q18 ⇒ The stage wise operation of adsorption is called contact filtration [other wrong options] [Discuss in forum] |
| Q19 ⇒ 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) J = Lp(Δp - σΔπ) [other wrong options] [Discuss in forum] |
| Q20 ⇒ The disk centrifuge is the type of centrifuge used most often for bio separations due to its lesser cost [other wrong options] [Discuss in forum] |
| Or |