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Question: In stripping section of continuous distillation column, the
[A].

liquid is stripped of high boiler.

[B].

liquid is enriched with high boiler.

[C].

vapour is stripped of low boiler.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency
[A].

liquid stream should be distributed uniformly.

[B].

gas stream should be distributed uniformly.

[C].

both gas as well as liquid streams should be distributed uniformly.

[D].

by passing should be completely avoided.

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.
[A].

Watted wall

[B].

Packed

[C].

Plate

[D].

Spray

Answer: Option C

Explanation:

No answer description available for this question.

Question: Measurement of the interfacial area of mass transfer is achieved easily & accurately in case of a __________ coloumn.
[A].

spray

[B].

packed

[C].

bubble cap plate

[D].

wetted wall

Answer: Option D

Explanation:

No answer description available for this question.

Question: During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the
[A].

gas film

[B].

liquid film

[C].

liquid-gas interface

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: McCabe-Thiele method
[A].

uses molal units for material and energy balance.

[B].

uses weight fractions to express liquid and vapour composition.

[C].

can use any type of units.

[D].

is more accurate than Ponchan-Savarit method.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Advantage of continuous drying over batch drying is that the
[A].

drying cost per unit weight of dried product is less.

[B].

product with more uniform moisture content is produced.

[C].

equipment size required is smaller.

[D].

all ‘a’, ‘b’ & ‘c’

Answer: Option D

Explanation:

No answer description available for this question.

Question: Binary distillation involves the mass transfer by __________ at the gas-liquid interface.
[A].

unidirectional diffusion from liquid to gas phase

[B].

unidirectional diffusion from gas to liquid phase

[C].

either ‘a’ or ‘b’

[D].

a counter diffusion at an almost equal molar rate

Answer: Option D

Explanation:

No answer description available for this question.

Question: A coalescer in a mixer-settler liquid-liquid extraction coloumn
[A].

comprises of thin bed of substances of extended surface having high porosity.

[B].

helps in increasing the bubble size entering the settler.

[C].

helps in increasing the settling rate of the bubbles.

[D].

all ‘a’, ‘b’, & ‘c’.

Answer: Option D

Explanation:

No answer description available for this question.