Biochemical Engineering | Downstream Processing

If the membrane rejects all solute, the rejection coefficient (s) is

Byadmin July 20, 2022

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

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.

Biochemical Engineering | Fermentation Reactors

A fed-batch reactor containing 2 litre of medium and 0.1 g.l-l of biomass is fed with a medium containing 1 g.l-1 of substrate at 1 litre per hour. If after 10 hours, the concentration of biomass in the reactor was 0.2 g.l-1, then the biomass produced during the 10 hour period is

Question: A fed-batch reactor containing 2 litre of medium and 0.1 g.l-l of biomass is fed with a medium containing 1 g.l-1 of substrate at 1 litre per hour. If after 10 hours, the concentration of biomass in the reactor was 0.2 g.l-1, then the biomass produced during the 10 hour period is
[A].

1.5 g
[B].
2.2 g
[C].
3.0 g
[D].
6.0 g

Answer: Option B

Explanation:

No answer description available for this question.

Read More A fed-batch reactor containing 2 litre of medium and 0.1 g.l-l of biomass is fed with a medium containing 1 g.l-1 of substrate at 1 litre per hour. If after 10 hours, the concentration of biomass in the reactor was 0.2 g.l-1, then the biomass produced during the 10 hour period is
Biochemical Engineering | Fermentation Kinetics

A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a __________ culture.

Question: A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a __________ culture.
[A].

continuous
[B].
batch
[C].
fed-batch
[D].
semi continuous

Answer: Option B

Explanation:

No answer description available for this question.

Read More A culture in a closed vessel to which no additional medium is added and from which no waste products are removed is called a __________ culture.
Agitation And Aeration | Biochemical Engineering

The effect of increasing the stirrer speed in an unbaffled stirred tank reactor is that

Question: The effect of increasing the stirrer speed in an unbaffled stirred tank reactor is that
[A].

a small increase in stirrer speed will cause the liquid to enter the turbulent flow regime
[B].
as the stirrer speed increases, the liquid will continue to circulate and then become turbulent
[C].
as the stirrer speed increases, the liquid will continue to circulate. Eventually a vortex will form.
[D].
A vortex will form at low stirrer speeds. As the stirrer speed increases the liquid will start to circulate

Answer: Option C

Explanation:

No answer description available for this question.

Read More The effect of increasing the stirrer speed in an unbaffled stirred tank reactor is that
Biochemical Engineering | Enzymes And Kinetics

When substrate [S] = KM (Michaelis-Menten constant), the velocity of an enzyme catalyzed reaction is about

Question: When substrate [S] = KM (Michaelis-Menten constant), the velocity of an enzyme catalyzed reaction is about
[A].

0.1 * Vmax
[B].
0.2 * Vmax
[C].
0.5 * Vmax
[D].
0.9 * Vmax

Answer: Option C

Explanation:

No answer description available for this question.

Read More When substrate [S] = KM (Michaelis-Menten constant), the velocity of an enzyme catalyzed reaction is about
Biochemical Engineering | Water Treatment

Permanent hardness of water may be removed by the addition of

Question: Permanent hardness of water may be removed by the addition of
[A].

lime
[B].
soda ash
[C].
potassium permagnate
[D].
sodium bicarbonate

Answer: Option B

Explanation:

No answer description available for this question.

Read More Permanent hardness of water may be removed by the addition of
Agitation And Aeration | Biochemical Engineering

Reynolds (Rei) number for the impeller is given by (where Di, stirrer diameter; N, stirrer speed, ρ, density of fluid and μ, viscosity of fluid)

Question: Reynolds (Rei) number for the impeller is given by (where Di, stirrer diameter; N, stirrer speed, ρ, density of fluid and μ, viscosity of fluid)
[A].

DiVρ/μ
[B].
Di2Nρ/μ
[C].
Di2Vρ/μ
[D].
DiNρ /μ

Answer: Option B

Explanation:

No answer description available for this question.

Read More Reynolds (Rei) number for the impeller is given by (where Di, stirrer diameter; N, stirrer speed, ρ, density of fluid and μ, viscosity of fluid)

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