Agitation And Aeration | Biochemical Engineering

Which of the following would be best described as an axial flow impeller?

Byadmin July 19, 2022

Question: Which of the following would be best described as an axial flow impeller?
[A].

An impeller with blades pitched at 45° to the vertical

[B].

An impeller which directs liquid flow towards the base of the reactor

[C].

Both (a) and (b)

[D].

An impeller with blades pitched at 75° to the vertical

Answer: Option C

Explanation:

No answer description available for this question.

Agitation And Aeration | Biochemical Engineering

Which of the following impellers will provide radial flow?

Question: Which of the following impellers will provide radial flow?
[A].

Paddles
[B].
Flat blade turbines
[C].
Disk flat blade turbines
[D].
All of the above

Answer: Option D

Explanation:

No answer description available for this question.

Read More Which of the following impellers will provide radial flow?
Biochemical Engineering | Sterilization

Model proposed by the Friedlander, correlating the air filtration efficiency by impaction can be expressed as (where NSt is the Stokes number)

Question: Model proposed by the Friedlander, correlating the air filtration efficiency by impaction can be expressed as (where NSt is the Stokes number)
[A].

ηimp = 0.075NSt1.2
[B].
ηimp = 0.75NSt1.2
[C].
ηimp = 0.25NSt1.2
[D].
ηimp = 0.025NSt1.2

Answer: Option A

Explanation:

No answer description available for this question.

Read More Model proposed by the Friedlander, correlating the air filtration efficiency by impaction can be expressed as (where NSt is the Stokes number)
Biochemical Engineering | Sterilization

The highest temperature which appears to be feasible for batch sterilization is

Question: The highest temperature which appears to be feasible for batch sterilization is
[A].

121°C
[B].
100°C
[C].
105°C
[D].
130°C

Answer: Option A

Explanation:

No answer description available for this question.

Read More The highest temperature which appears to be feasible for batch sterilization is
Biochemical Engineering | Fermentation Kinetics

Why a T-flask used in small-scale cell culture is incubated in a horizontal position?

Question: Why a T-flask used in small-scale cell culture is incubated in a horizontal position?
[A].

To save space
[B].
To increase the surface area of the liquid-air interface
[C].
Both (a) and (b)
[D].
To increase the rate of oxygen transfer into the liquid

Answer: Option C

Explanation:

No answer description available for this question.

Read More Why a T-flask used in small-scale cell culture is incubated in a horizontal position?
Biochemical Engineering | Sterilization

In sterilization process, spore of which of the following organism is considered as control?

Question: In sterilization process, spore of which of the following organism is considered as control?
[A].

Bacillus subtilis
[B].
Clostridium botulinum
[C].
Bacillus stearothermophilus
[D].
Aspergillus niger

Answer: Option C

Explanation:

No answer description available for this question.

Read More In sterilization process, spore of which of the following organism is considered as control?
Biochemical Engineering | Fluid Flow

A dilatant fluid is one in which the viscosity

Question: A dilatant fluid is one in which the viscosity
[A].

is constant regardless of the stirrer speed or mixing time
[B].
changes during mixing but returns to its original state after mixing
[C].
increases with increasing stirrer speed
[D].
decreases with increasing stirrer speed

Answer: Option C

Explanation:

No answer description available for this question.

Read More A dilatant fluid is one in which the viscosity

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