Mass Transfer

Question: An ideal tower packing should not
[A].

have low weight per unit volume.

[B].

have large surface area per unit volume.

[C].

have large free cross-section.

[D].

hold up large amount of liquid in the packing.

Answer: Option D

Explanation:

No answer description available for this question.

Question: In triangular co-ordinates, the ternery composition point falls __________ of the triangle.
[A].

in the corners

[B].

inside

[C].

on the sides

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Henry’s law states that the
[A].

partial pressure of a component over a solution is proportional to its mole fraction in the liquid.

[B].

partial pressure of a component over a solution is proportional to the mole fraction in the vapour.

[C].

vapour pressure is equal to the product of the mole fraction and total pressure.

[D].

partial pressure is equal to the product of the mole fraction and total pressure.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Large quantity of silica gel is normally dried in a __________ dryer.
[A].

freeze

[B].

through circulation

[C].

rotary vacuum

[D].

tray

Answer: Option B

Explanation:

No answer description available for this question.

Question: Extraction of pencillin employs a __________ extraction coloumn.
[A].

centrifugal

[B].

packed

[C].

plate

[D].

None of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Design calculation for multiple component distillation is done by
[A].

Ponchon-Savarit method

[B].

Mccabe-Thiele method

[C].

enthalpy concentration method

[D].

tray to tray calculations.

Answer: Option D

Explanation:

No answer description available for this question.

Question: With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux
[A].

increases

[B].

decreases

[C].

remains same

[D].

may increase or decrease ; depends on system.

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ developed the film theory.
[A].

Higbie

[B].

Fick

[C].

Ergun

[D].

Levenspeil

Answer: Option A

Explanation:

No answer description available for this question.

Question: In liquid-liquid extraction, the number of phases at plait point is
[A].

1

[B].

2

[C].

3

[D].

4

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ equation applies to diffusivities in liquids.
[A].

Gilliland

[B].

Hirschfelder

[C].

Wilke and Chang

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.