Q. Pre-cooling is required before passing the vapour to the condenser in a still.

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Q. The equation applicable for batch distillation is _________

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Q. Estimate the feed rate, if the composition of the more volatile component in the feed is 50% and the residue is 10% and the equilibrium relation is given by y*= 1.975x. Also, the rate of residue is 60 mol/hr.

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Q. Find the rate of distillate, if the composition of the more volatile component in the feed is 50% and the residue is 10% and the equilibrium relation is given by y*= 1.975x. Also the rate of residue is 60 mol/hr.

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Q. Rectifying continuously is known as _____________

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Q. The top of the fractionators has ______ temperature.

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

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Q. The bottom of the fractionators has a ______ temperature.

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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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