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In a distillation process, the Initial Boiling Point (ibp) is defined as the temperature of the liquid when:

A - Partial vaporization of the desired component is achieved B - The first drop of distillate condenses into the receiver C - The first evidence of steam can be observed D - The last drop of liquid boils and distils into the receiver Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 4:

Top product is defined as:

A - The condensed product that is returned to the still to assist in making a more complete separation into the desired fractions B - The lighter hydrocarbon component(s) distilled from the feed C - The original feed mixture with the distillate removed D - The stream of hydrocarbons that enters the fractionation tower Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 5:

In a fractionation tower a 100% pure product can be produced because the vaporization and condensing actions on the trays are 100% effective.

A - True B - False Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 6:

The feed stream to the fractionation tower should be:

A - Completely vaporized B - Partly vaporized C - Totally liquid D - None of the above Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 7:

Reflux is defined as:

A - The stream of hydrocarbons that enters the fractionation tower B - The condensed product that is returned to the still to assist in making a more complete separation into the desired fractions C - The original feed mixture with the distillate removed D - The lighter hydrocarbon component(s) distilled from the feed Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 8:

In the fractionation tower, the top temperature is set:

A - As the highest temperature achieved in the tower to ensure minimal cracking B - Low enough to condense the overhead product in the top tray C - To maximize the amount of cooling that can be accomplished by the reflux D - Just high enough to completely vaporize the overhead product Correctness Rule: Single Correct Answer Required Answer(s) Given: D Correct Answer(s): D Marked as: Correct _______________________________________________

Question 9:

Feed is defined as:

A - The stream of hydrocarbons that enters the fractionation tower B - The lighter hydrocarbon component(s) distilled from the feed C - The condensed product that is returned to the still to assist in making a more complete separation into the desired fractions D - The original feed mixture with the distillate removed Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 10:

What determines the top temperature of a fractionator and what factor limits this temperature?

A - It is the dew point temperature of the overhead product and is limited by the amount of cooling that can be accomplished by the reflux B - It is the hottest temperature in the tower and is limited by the amount of heating that can be accomplished by the reflux C - It is the hottest temperature in the tower and is limited by the amount of cooling that can be accomplished by the reflux D - It is the dew point temperature of the overhead product and is limited by the amount of heating that can be accomplished by the reflux Correct Answer(s): A

Question 1:

As the liquid in the fractionator becomes richer with the ________ higher boiling point components, it flows back into the still below where it is eventually withdrawn as the __________ product.

A - heavier, bottom B - lighter, bottom C - lighter, top D - heavier, top Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 2:

The feed stream to the fractionation tower should be:

A - Completely vaporized B - Partly vaporized C - Totally liquid D - None of the above Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 3:

In the fractionation tower, the top temperature is set:

A - Just high enough to completely vaporize the overhead product B - As the highest temperature achieved in the tower to ensure minimal cracking C - Low enough to condense the overhead product in the top tray D - To maximize the amount of cooling that can be accomplished by the reflux Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 4:

In a fractionation tower a 100% pure product can be produced because the vaporization and condensing actions on the trays are 100% effective.

A - True B - False Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 5:

The term "reflux ratio" usually refers to the ratio of reflux to:

A - Reboiler feed B - Overhead product C - Tower feed D - Bottom product Correctness Rule: Single Correct Answer Required Answer(s) Given: B Correct Answer(s): B Marked as: Correct _______________________________________________

Question 6:

Reflux is defined as:

A - The condensed product that is returned to the still to assist in making a more complete separation into the desired fractions B - The stream of hydrocarbons that enters the fractionation tower C - The lighter hydrocarbon component(s) distilled from the feed D - The original feed mixture with the distillate removed Correctness Rule: Single Correct Answer Required Answer(s) Given: A Correct Answer(s): A Marked as: Correct _______________________________________________

Question 7:

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