Biochemical Engineering | Downstream Processing

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

Byadmin July 20, 2022

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.

Agitation And Aeration | Biochemical Engineering

Detergent like substances produced by microorganisms during a fermentation will lead to

Question: Detergent like substances produced by microorganisms during a fermentation will lead to
[A].

decrease the surface tension of the liquid
[B].
accumulate at the gas liquid interface
[C].
decrease the rate of bubble coalescence
[D].
all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Read More Detergent like substances produced by microorganisms during a fermentation will lead to
Biochemical Engineering | Fermentation Reactors

A Bacillus sp. produces an antibiotic only during the stationary phase when grown in a batch culture. If grown in a 5 litre continuous culture, the steady state productivity of the antibiotic

Question: A Bacillus sp. produces an antibiotic only during the stationary phase when grown in a batch culture. If grown in a 5 litre continuous culture, the steady state productivity of the antibiotic
[A].

will increase until the culture washes out
[B].
will decrease after washout
[C].
will be zero
[D].
will be infinite

Answer: Option C

Explanation:

No answer description available for this question.

Read More A Bacillus sp. produces an antibiotic only during the stationary phase when grown in a batch culture. If grown in a 5 litre continuous culture, the steady state productivity of the antibiotic
Biochemical Engineering | Sterilization

The specific death rate of an organism can be expressed as

Question: The specific death rate of an organism can be expressed as
[A].

ln 2/D
[B].
D/ln2
[C].
D.ln2
[D].
2.0.3/ln2

Answer: Option A

Explanation:

No answer description available for this question.

Read More The specific death rate of an organism can be expressed as
Biochemical Engineering | Fermentation Reactors

Mixing profiles closest to plug flow are observed in

Question: Mixing profiles closest to plug flow are observed in
[A].

continuous packed bed reactor
[B].
stirred tank reactor with biomass recycles
[C].
continuous fluidized bed bioreactor
[D].
all of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More Mixing profiles closest to plug flow are observed in
Biochemical Engineering | Downstream Processing

Maintenance cost varies from

Question: Maintenance cost varies from
[A].

0-4% of the capital cost
[B].
12-16% of the capital cost
[C].
4-8% of the capital cost
[D].
8-12% of the capital cost

Answer: Option C

Explanation:

No answer description available for this question.

Read More Maintenance cost varies from
Biochemical Engineering | Fermentation Kinetics

In an airlift bioreactor, the air sparging region is called

Question: In an airlift bioreactor, the air sparging region is called
[A].

downcomer
[B].
disengagement zone
[C].
air riser
[D].
none of these

Answer: Option C

Explanation:

No answer description available for this question.

Read More In an airlift bioreactor, the air sparging region is called

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