Chemical Engineering

Question: Chemisorption compared to physical absorption has
[A].

lower adsorption rate.

[B].

lower capacity of the solvent for the solute gas.

[C].

increased utilisation of stagnant zones of the liquid phase.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: In case of absorption, both the operating and equilibrium lines will be straight for
[A].

isothermal operation.

[B].

dilute solutions.

[C].

dilute solutions and isothermal operation.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Ordinary diffusion process is also called __________ diffusion.
[A].

pressure

[B].

thermal

[C].

concentration

[D].

forced.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Flash distillation is
[A].

same as differential distillation.

[B].

used for multicomponent systems like crude refining.

[C].

same as simple distillation.

[D].

most useful for handling binary systems.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Absorption accompanied with chemical reaction is exemplified by the absorption of
[A].

ammonia in water.

[B].

benzol present in coke oven gas by wash oil.

[C].

SO2 in alkaline solution.

[D].

all (a), (b) and (c).

Answer: Option C

Explanation:

No answer description available for this question.

Question: L/mG is the expression for
[A].

absorption factor

[B].

Brinkman number

[C].

slope of operating line in absorber

[D].

slope of operating line in stripper.

Answer: Option A

Explanation:

No answer description available for this question.

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.