Q. The section below the feed tray in a fractionator is known as ______________

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Q. The use of vapour produced from the reboiler is

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Q. The light key components are__________

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Q. Find the reflux ratio if the feed , residue and reflux rate is 100, 40 and 50 mole/hr.

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Q. The residue has a more heavy key component.

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Q. The Enriching section operating line intercept at the origin in McCabe-Thiele method when

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Q. If the feed enters the distillation column at its dew point, then the slope of the Flash vaporization operating line is

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Q. If there is no reflux to a fractionating column then

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Q. After leaving the condenser if the liquid is at bubble point then which of the following is correct?

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Q. McCabe –Thiele method excludes ________ information.

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Q. Non-equimolal flow rates are maintained in the fractionator obeying McCabe-Thiele method.

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Q. Heat losses are avoided in McCabe-Thiele method.

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Q. The slope of the operating line of the enriching section is R/R+1.

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Q. Find the slope of the operating line of the top section of Fractionator if Reflux ratio is 2.
Hint: use McCabe Thiele method is applicable

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Q. In order to find the total number of theoretical trays we usually add one stage additional for ___________

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Q. The Ponchon Savorit method is applicable for determining negligible heat loss.

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Q. External reflux ratio is used for Ponchon Savorit method.

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Q. Find the heat removed by the condenser if the net heat out of the condenser is 25000 J and the total moles are 25.

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Q. The fictitious stream is the difference in the flow rates of the nth tray.

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Q. Ponchon Savorit method do not include enthalpy concentration diagram.

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