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CHEMICAL ENGINEERING

For stripping of a gas in a counter current stripper, the operating line

CHEMICAL ENGINEERING, Mass Transfer /
Question: For stripping of a gas in a counter current stripper, the operating line
[A].

lies above the equilibrium curve.

[B].

lies below the equilibrium curve.

[C].

can lie above or below the equilibrium curve.

[D].

is always parallel to the equilibrium curve.

Answer: Option C

Explanation:

No answer description available for this question.

For stripping of a gas in a counter current stripper, the operating line Read More »

CHEMICAL ENGINEERING, Mass Transfer

In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

CHEMICAL ENGINEERING, Mass Transfer /
Question: In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed
[A].

q > 1

[B].

q < 1

[C].

q = 1

[D].

q = 0

Answer: Option C

Explanation:

No answer description available for this question.

In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed Read More »

CHEMICAL ENGINEERING, Mass Transfer

For absorbing a sparingly soluble gas in a liquid

CHEMICAL ENGINEERING, Mass Transfer /
Question: For absorbing a sparingly soluble gas in a liquid
[A].

gas side mass transfer co-efficient should be increased.

[B].

liquid side mass transfer co-efficient should be increased.

[C].

liquid side mass transfer co-efficient should be decreased.

[D].

mass transfer co-efficient must be kept constant.

Answer: Option B

Explanation:

No answer description available for this question.

For absorbing a sparingly soluble gas in a liquid Read More »

CHEMICAL ENGINEERING, Mass Transfer

In gas-liquid contact operation, the number of ideal stages, . This is true when the stripping factor ‘S’ is

CHEMICAL ENGINEERING, Mass Transfer /
Question: In gas-liquid contact operation, the number of ideal stages, . This is true when the stripping factor ‘S’ is
[A].

S > 1

[B].

S < 1

[C].

S = 1

[D].

S = ∞

Answer: Option A

Explanation:

No answer description available for this question.

In gas-liquid contact operation, the number of ideal stages, . This is true when the stripping factor ‘S’ is Read More »

CHEMICAL ENGINEERING, Mass Transfer

Mass transfer co-efficient ‘K’ according to penetration theory varies with mass dif-fusivity as

CHEMICAL ENGINEERING, Mass Transfer /
Question: Mass transfer co-efficient ‘K’ according to penetration theory varies with mass dif-fusivity as
[A].

D0.5

[B].

D

[C].

1/D

[D].

D1.5

Answer: Option A

Explanation:

No answer description available for this question.

Mass transfer co-efficient ‘K’ according to penetration theory varies with mass dif-fusivity as Read More »

CHEMICAL ENGINEERING, Mass Transfer

If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

CHEMICAL ENGINEERING, Mass Transfer /
Question: If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is
[A].

0.31

[B].

0.107

[C].

0.017

[D].

0.215

Answer: Option D

Explanation:

No answer description available for this question.

If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is Read More »

CHEMICAL ENGINEERING, Mass Transfer

Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a

CHEMICAL ENGINEERING, Mass Transfer /
Question: Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a
[A].

higher dew point.

[B].

higher absolute (specific) humidity.

[C].

higher relative humidity

[D].

higher wet bulb temperature.

Answer: Option C

Explanation:

No answer description available for this question.

Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a Read More »

CHEMICAL ENGINEERING, Mass Transfer

In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be

CHEMICAL ENGINEERING, Mass Transfer /
Question: In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be
[A].

liquid phase resistance-controlled.

[B].

gas phase resistance controlled.

[C].

impossible.

[D].

driven by a non-linear driving force.

Answer: Option B

Explanation:

No answer description available for this question.

In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be Read More »

CHEMICAL ENGINEERING, Mass Transfer

For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

CHEMICAL ENGINEERING, Mass Transfer /
Question: For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams
[A].

increases

[B].

decreases

[C].

remains unaffected

[D].

passes through a maximum

Answer: Option A

Explanation:

No answer description available for this question.

For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams Read More »

CHEMICAL ENGINEERING, Mass Transfer