Biochemical Engineering | Fermentation Kinetics

An internal draft tube is preferrred to an external draft tube because

Byadmin July 20, 2022

Question: An internal draft tube is preferrred to an external draft tube because
[A].

it is easier to clean and sterilize a reactor

[B].

it is cheaper to build a reactor with an internal draft tube

[C].

Both (a) and (b)

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Biochemical Engineering | Fermentation Reactors

A continuous reactor at steady state contains 0.04 g.l-1 of biomass and 0.02 g.l-1 of phenol. The feed contained 0.1 g.l-1 of phenol. The biomass yield would be

Question: A continuous reactor at steady state contains 0.04 g.l-1 of biomass and 0.02 g.l-1 of phenol. The feed contained 0.1 g.l-1 of phenol. The biomass yield would be
[A].

0.4 g.g-1
[B].
0.5 g.g-1
[C].
1.0 g.g-1
[D].
5.0 g.g-1

Answer: Option B

Explanation:

No answer description available for this question.

Read More A continuous reactor at steady state contains 0.04 g.l-1 of biomass and 0.02 g.l-1 of phenol. The feed contained 0.1 g.l-1 of phenol. The biomass yield would be
Agitation And Aeration | Biochemical Engineering

Radial flow impellers

Question: Radial flow impellers
[A].

provide high shear conditions for breaking up bubbles
[B].
direct flow towards the walls of the reactor
[C].
Both (a) and (b)
[D].
provide low shear conditions and are suited for use in shear sensitive procesess

Answer: Option C

Explanation:

No answer description available for this question.

Read More Radial flow impellers
Biochemical Engineering | Fermentation Kinetics

Wash out in steady state fermentation occurs when

Question: Wash out in steady state fermentation occurs when
[A].

dilution rate is less than maximum specific growth rate
[B].
dilution rate is higher than the maximum specific growth rate
[C].
cell concentration reaches the maximum
[D].
specific growth rate is maximum

Answer: Option B

Explanation:

No answer description available for this question.

Read More Wash out in steady state fermentation occurs when
Biochemical Engineering | Fermentation Kinetics

To describe components of an airlift bioreactor which of the follow-ings are generally included?

Question: To describe components of an airlift bioreactor which of the follow-ings are generally included?
[A].

Disengagement zone, air riser, downcomer
[B].
Flotsam, jetsam, downzone
[C].
Air comer, disentanglement zone, downsizer
[D].
All of the above

Answer: Option A

Explanation:

No answer description available for this question.

Read More To describe components of an airlift bioreactor which of the follow-ings are generally included?
Biochemical Engineering | Fermentation Kinetics

Which of the following is incorrect?

Question: Which of the following is incorrect?
[A].

The mechanical agitation and aeration are effective for suspension of cells
[B].
The mechanical agitation and aeration are effective for mixing the medium
[C].
STF can’t be used for high viscosity medium
[D].
The mechanical agitation and aeration are effective for oxygenation

Answer: Option C

Explanation:

No answer description available for this question.

Read More Which of the following is incorrect?
Biochemical Engineering | Water Treatment

When temporary hard water is boiled, one of the substances formed is

Question: When temporary hard water is boiled, one of the substances formed is
[A].

calcium bicarbonate
[B].
calcium sulfate
[C].
hydrogen chloride
[D].
carbon dioxide

Answer: Option D

Explanation:

No answer description available for this question.

Read More When temporary hard water is boiled, one of the substances formed is

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