For _______________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same?

Byadmin February 18, 2019August 22, 2021

For _______________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same?

A. Unsaturated surface
B. Constant rate
C. Both A. and B.
D. Neither A. nor B.

CHEMICAL ENGINEERING | Mass Transfer

A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture?

Question: A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture?
[A].

The mixture exhibits an azeotrope at 101.3 kPa.
[B].
The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10.
[C].
The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10.
[D].
The mixture contain optical isomers.

Answer: Option A

Explanation:

No answer description available for this question.

Read More A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture?
Mass Transfer

In stripping section of continuous distillation column, the_______________________?

In stripg 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

Read More In stripping section of continuous distillation column, the_______________________?
CHEMICAL ENGINEERING | Mass Transfer

One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect

Question: One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect
[A].

the product composition but not the fraction vaporised.
[B].
the product composition as well as the fraction vaporised.
[C].
the fraction vaporised but not the product composition.
[D].
neither the product composition nor the fraction vaporised.

Answer: Option C

Explanation:

No answer description available for this question.

Read More One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect
CHEMICAL ENGINEERING | Mass Transfer

In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when

Question: In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when
[A].

saturated feed is not used.
[B].
an azeotrope forms.
[C].
the latent heat of vaporisation of the more and less volatile components are greatly different.
[D].
a total condenser is used.

Answer: Option D

Explanation:

No answer description available for this question.

Read More In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when
Mass Transfer

Absorption factor method is used to calculate the number of ideal stages, when_______________________?

Absorption factor method is used to calculate the number of ideal stages, when_______________________?

A. Operating line lies above the equilibrium line
B. Operating line lies below the equilibrium line
C. Both operating and equilibrium lines are parallel
D. Pressure drop in the column is very high

Read More Absorption factor method is used to calculate the number of ideal stages, when_______________________?
Mass Transfer

In case of constant underflow extraction operation, the _______________________ at all solute concentration?

In case of constant underflow extraction operation, the _______________________ at all solute concentration?

A. Solids are drained to the same extent
B. Ratio of the insoluble to solution is constant
C. Both A. & B.
D. Neither A. nor B.

Read More In case of constant underflow extraction operation, the _______________________ at all solute concentration?

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