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Distillation Design Mcqs

Q:

Extreme purity is confessed to be?

A) 90.0% B) 99.8%
C) 99.1% D) 99.9%
 
Answer & Explanation Answer: B) 99.8%

Explanation: Extreme purity is confessed to be 99.8%, this has to be very précised even a point 0.01% error cannot be tolerated for the purity.

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Q:

At constant pressure, there exhibits a nearly extreme point at zero concentration for one or several of the components this point is called?

A) Tangent pitch B) Elliptical pitch
C) Parabolic pitch D) Circular pitch
 
Answer & Explanation Answer: A) Tangent pitch

Explanation: This phenomenon is also called a tangent pinch, such mixtures are of great practical importance, examples of common tangentially zeotropic mixtures are acetone and water.

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Q:

Permeate fluxes decrease, significantly with decreasing

A) Reflux ratio B) Feed Concentrations
C) Boiling point D) Bubble point
 
Answer & Explanation Answer: B) Feed Concentrations

Explanation: Permeate fluxes decrease significantly with decreasing feed concentrations, There is a trade-off between the permeate flux and selectivity.

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Q:

The blank region on the tray deck is called as?

A) Cracking gin B) Sleeping zone
C) Calming zone D) Professor zone
 
Answer & Explanation Answer: C) Calming zone

Explanation: Disengagement of liquid occurs before the liquid overflows this region is called as the calming zone.

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31
Q:

Changing old accessories with new one, the process is called as?

A) Re-fitting B) Re-Designing
C) Re-vamping D) Re-cycling
 
Answer & Explanation Answer: C) Re-vamping

Explanation: If an existing column is required to work at the higher capacity the column is called revamped.

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Q:

Entrainment, can be reduced by

A) Baffles B) Vortex
C) Clip D) Sieve
 
Answer & Explanation Answer: A) Baffles

Explanation: The fitting of a baffle can increase in the vapor space and thus reducing entrainment.

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