QuizMaster

Question: Which of the operation does not come under upstream processing?
[A].

Media preparation

[B].

Inoculum development

[C].

Effluent treatment

[D].

Storage of raw material

Answer: Option C

Explanation:

No answer description available for this question.

Question: In antibiotic manufacturing processes, the fermentation time ranges from
[A].

2-3 weeks

[B].

1-2 weeks

[C].

4-5 weeks

[D].

2-4 weeks

Answer: Option C

Explanation:

No answer description available for this question.

Question: Concentration polarization can be reduced further by
[A].

pre filtering the solution

[B].

reducing the flow rate per unit membrane surface area

[C].

back washing periodically

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Question: If the solute passes through membrane freely, the the rejection coefficient (s) is
[A].

1

[B].

0

[C].

>1

[D].

<1

Answer: Option B

Explanation:

No answer description available for this question.

Question: If the membrane rejects all solute, the rejection coefficient (s) is
[A].

1

[B].

0

[C].

>1

[D].

<1

Answer: Option A

Explanation:

No answer description available for this question.

Question: 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

Answer: Option A

Explanation:

No answer description available for this question.

Question: Micro filtration refers to the separation of suspended material such as bacteria by using a membrane with spore sizes of
[A].

0.02 to 10μm

[B].

1-10A°

[C].

20-30μm

[D].

10-200A°

Answer: Option A

Explanation:

No answer description available for this question.

Question: A common filter medium is the cloth filter generally made of
[A].

canvas

[B].

synthetic fabrics

[C].

metal or glass fiber

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: The conventional filtration involves the separation of large particles generally
[A].

dp>5μm

[B].

dp>10μm

[C].

dp>15μm

[D].

dp>20μm

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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

Answer: Option B

Explanation:

No answer description available for this question.