Downstream Processing MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Downstream Processing, a fundamental topic in the field of Biochemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Downstream Processing MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Downstream Processing mcq questions that explore various aspects of Downstream Processing problems. Each MCQ is crafted to challenge your understanding of Downstream Processing principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Downstream Processing MCQs are your pathway to success in mastering this essential Biochemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Downstream Processing. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Downstream Processing knowledge to the test? Let's get started with our carefully curated MCQs!

Downstream Processing MCQs | Page 3 of 3

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Q21.
For cost analysis in a fermentor system, the depreciation cost varies from

a.

5-6% of the capital cost

b.

6-7% of the capital cost

c.

6-10% of the capital cost

d.

8-10% of the capital cost

Discuss
Answer: (c).6-10% of the capital cost
Q22.
Micro filtration refers to the separation of suspended material such as bacteria by using a membrane with spore sizes of

a.

0.02 to 10Ξm

b.

1-10A°

c.

20-30Ξm

d.

10-200A°

Discuss
Answer: (a).0.02 to 10Ξm
Q23.
Start up expenses in a fermentation industry varies from

a.

0-5% of the capital cost

b.

10-15% of the capital cost

c.

5-10% of the capital cost

d.

15-20% of the capital cost

Discuss
Answer: (c).5-10% of the capital cost
Q24.
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)

a.

J = Lp(Δp - σΔπ)

b.

J/A = Lp(Δp - σΔπ)

c.

J = Lp/σΔπ

d.

J/A = Lp/Δp

Discuss
Answer: (a).J = Lp(Δp - σΔπ)
Q25.
Which of the following is considered as a pretreatment to the biological feeds?

a.

Heating to denature the proteins

b.

Addition of filter aids to increase the porosity

c.

Addition of electrolytes

d.

All of the above

Discuss
Answer: (d).All of the above
Q26.
For the extractions operation, the selectivity should be

a.

> 1

b.

< 1

c.

1

d.

zero

Discuss
Answer: (a).> 1
Q27.
The purity of a solute collected between two times t1 and t2 during chromatographic separation can be calculated as

a.

amount of solute eluted - amount of impurity eluted

b.

amount of solute eluted / amount of impurity eluted

c.

amount of solvent eluted + amount of impurity eluted

d.

amount of solvent eluted / amount of impurity eluted

Discuss
Answer: (b).amount of solute eluted / amount of impurity eluted
Q28.
Chromatography is based on the

a.

different rate of movement of the solute in the column

b.

separation of one solute from other constituents by being captured on the adsorbent

c.

different rate of movement of the solvent in the column

d.

any of the above

Discuss
Answer: (a).different rate of movement of the solute in the column
Q29.
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)

a.

Y = YmaxX/(KL+X)

b.

Y = Ymax/(KL+X)

c.

Y = YmaxX/KL

d.

Y = Ymax- X/ (KL+X)

Discuss
Answer: (a).Y = YmaxX/(KL+X)
Q30.
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

a.

15,000 to 50,000 rpm

b.

50,000 to 100,000 rpm

c.

100,000 to 150,000 rpm

d.

150,000 to 200,000 rpm

Discuss
Answer: (a).15,000 to 50,000 rpm
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