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Q46

FAILMCQpage 23holdREVIEW_LOW_CONFIDENCEP2UNREVIEWED

type=MCQ · page=23–24 · marks=2 · content_conf=0.7999999999999999 · math_conf=0.78

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Source / evidence

file: GATE CH 2020 (with Solutions).pdf

pages: 23–24

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Extracted46 / 67

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

P_1

and another at

P_2,

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

P_1

and

P_2

are in kPa, which one of the following is correct?

Options

A.
$P_1 = 100, P₂=20, and high purity E is recovered from the top of column 2$
B.
$P_1 = 100, P₂=20, and high purity E is recovered from the bottom of column 2$
C.
$P_1 = 20, P₂=100, and high purity E is recovered from the top of column 2$
D.
$P_1 = 20, P₂=100, and high purity E is recovered from the bottom of column 2$

Answer

Solution

From the figure we can observe that relative volatility is less than 1 so more volatile component will come out from the bottom of the column... Hence D option will be correct

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Source PDF: GATE CH 2020 (with Solutions).pdf

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option_B	23	`—`	`—`none	`—`	`REVIEW`
option_C	23	`—`	`—`none	`—`	`REVIEW`
option_D	23	`—`	`—`none	`—`	`REVIEW`

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Dimensions

structurePASS
question_textFAIL
optionsFAIL
answerPASS
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mathPASS
cross_entityPASS

Issues

operator_set_changed_raw_vs_derived
option_A_operator_set_changed_raw_vs_derived
option_B_operator_set_changed_raw_vs_derived
option_C_operator_set_changed_raw_vs_derived
option_D_operator_set_changed_raw_vs_derived