Downstream Processing

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.

Question: 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

Answer: Option A

Explanation:

No answer description available for this question.

Question: The stage wise operation of adsorption is called
[A].

contact filtration

[B].

conventional adsorption

[C].

affinity adsorption

[D].

ion exchange

Answer: Option A

Explanation:

No answer description available for this question.

Question: 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)

Answer: Option A

Explanation:

No answer description available for this question.

Question: An ion exchange resin is composed of
[A].

polymeric network

[B].

ionic functional groups

[C].

counter ions

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Conventional adsorption is a
[A].

reversible process

[B].

irreversible process

[C].

either reversible or irreversible

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: For the extractions operation, the selectivity should be
[A].

> 1

[B].

< 1

[C].

1

[D].

zero

Answer: Option A

Explanation:

No answer description available for this question.

Question: Selectivity can be expressed as
[A].

ratio of the distribution coefficients in different solute

[B].

mass fraction of the solute in the extract phase at equilibrium

[C].

mass fraction of the solute in the raffinate phase

[D].

ratio of the mass fraction of the solute in the extract phase to the raffinate phase

Answer: Option A

Explanation:

No answer description available for this question.