Q. To prevent the composition change the vapour should not gets loss from the decanter.

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Q. If the reflux is total, minimum stages are used.

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Q. At Total reflux

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Q. Reflux ratio is infinity at

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Q. Estimate the condenser requirement for total reflux.

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Q. For minimum reflux ratio the number of trays becomes infinite.

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Q. For a minimum reflux ratio ________ condenser or reboiler loads are used.

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Q. For finding the exact number of trays the reflux ratio should be between minimum and infinity.

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Q. The reflux ratio increases by increasing the reflux and decreasing the distillate.

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Q. Most economical cost is

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Q. Consider an operating line touches the equilibrium line, and then the fixed cost becomes

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Q. If the operating cost is low, then the fixed cost is more.

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Q. If the reflux ratio increases _________ increases.

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Q. If the reflux increases ________ increases in the fractionator.

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Q. Total cost is

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Q. At optimum reflux ratio,

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Q. Total cost will be minimum at

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Q. Estimate the fixed cost if the operational cost is 7 lakhs and the total cost is 15 lakhs.

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Q. Estimate the operational cost if the fixed cost is 15 lakhs.
(Hint: reflux ratio= optimum)

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Q. Which of the following reboiler is considering as an additional tray?

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