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Q#1 GATE CH 2020 MCQ +2 marks -0.66 marks

Equilibrium data for a binary mixture of E and F at two different pressures is shown in the figure.

               

It is desired to process a feed containing 80 mol % E and 20 mol % F, and obtain a product with a purity of 99.5 mol % E. A sequence of two distillation columns, one operating at pressure P1 and another at P2,

is employed for this operation, as shown below.

               

Mole fraction of E in the distillate obtained from column 1 is 0.9. If the column pressures P1 and P2 are in kPa, which one of the following is correct?

P1 = 100, P2 = 20, and high purity E is recovered from the top of column 2

P1 = 100, P2 = 20, and high purity E is recovered from the bottom of column 2

P1 = 20, P2 = 100, and high purity E is recovered from the top of column 2

P1 = 20, P2 = 100, and high purity E is recovered from the bottom of column 2

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Chemical Reaction Engineering 26 0 0
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Plant Design Economics 10 0 0
Thermodynamics 24 0 0