Mass Transfer

Which of the following is the most suitable for extraction in a system having very low density difference ?

Byadmin February 18, 2019August 22, 2021

Which of the following is the most suitable for extraction in a system having very low density difference ?

A. Mixer-settler extractor
B. Centrifugal extractor
C. Pulsed extractor
D. Packed extraction tower

Mass Transfer

In case of an ideal solution, the total vapor pressure varies ______________ with the composition expressed as mole fraction?

In case of an ideal solution, the total vapor pressure varies ______________ with the composition expressed as mole fraction?

A. Inversely
B. Linearly
C. Exponentially
D. None of these

Read More In case of an ideal solution, the total vapor pressure varies ______________ with the composition expressed as mole fraction?
CHEMICAL ENGINEERING | Mass Transfer

Adsorption is an unit operation which generally involves __________ systems.

Question: Adsorption is an unit operation which generally involves __________ systems.
[A].

liquid-solid
[B].
gas-solid
[C].
fluid-solid
[D].
solid-solid

Answer: Option C

Explanation:

No answer description available for this question.

Read More Adsorption is an unit operation which generally involves __________ systems.
Mass Transfer

Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?

Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?

A. Heat gain or loss
B. Flow rate of entering liquid
C. Flow rate of gas
D. None of these

Read More Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?
Mass Transfer

In gas-liquid contact operation, the number of ideal stages, N = (xa – xb)/(xb – x*b). This is true when the stripping factor ‘S’ is ________________?

In gas-liquid contact operation, the number of ideal stages, N = (xa – xb)/(xb – x*b). This is true when the stripg factor ‘S’ is ________________?

A. S > 1
B. S < 1
C. S = 1
D. S = ∞

Read More In gas-liquid contact operation, the number of ideal stages, N = (xa – xb)/(xb – x*b). This is true when the stripping factor ‘S’ is ________________?
CHEMICAL ENGINEERING | Mass Transfer

Gaseous diffusion co-efficient increases with increase in the

Question: Gaseous diffusion co-efficient increases with increase in the
[A].

pressure
[B].
temperature
[C].
both (a) & (b)
[D].
neither (a) nor (b)

Answer: Option B

Explanation:

No answer description available for this question.

Read More Gaseous diffusion co-efficient increases with increase in the
Mass Transfer

Dew point of an air-water vapor mixture_________________?

Dew point of an air-water vapor mixture_________________?

A. Decreases with decrease in pressure
B. At constant humidity & total pressure is fixed
C. Corresponding to any point on the humidity chart is obtained by projecting a line through this
point parallel to the temperature axis and to the saturation curve
D. All A , B. & C.

Read More Dew point of an air-water vapor mixture_________________?

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