GATE CH 2026 Paper 1 — page 7

Questions 19–21 of 65. Imported answers require review unless explicitly marked reviewed.

For an irreversible reaction containing inerts in the feed, single-pass conversion in a reactor is 70%. Which one of the following statements is CORRECT?

Your answerChoose one option.

Recycle eliminates the need for a purge stream.

Recycle reduces the concentration of inerts in the system.

Recycle increases the overall conversion.

Recycle decreases the overall conversion.

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A binary mixture of butane and butadiene is to be separated in an extractive distillation using furfural. Furfural lowers the activity of butadiene more than it does for butane. Consider the distillation sequence shown in the figure.

Diagram for Chemical Engineering question 20

Match the component labels in Group I with chemical species in Group II.

Group I	Group II
P. Component X	1. Butane
Q. Component Y	2. Butadiene
R. Component Z	3. Furfural

Your answerChoose one option.

P-1, Q-2, R-3

P-1, Q-3, R-2

P-2, Q-1, R-3

P-2, Q-3, R-1

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A two-dimensional temperature profile is given as

. If

and

are the unit vectors along x and y directions, respectively, which one of the following is the directional derivative of T at the location

Your answerChoose one option.

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2026 · Paper 1

Question 19

Question 20

Question 21