GATE CH 2022 Paper 1 — page 9

Questions 25–27 of 65. Imported answers require review unless explicitly marked reviewed.

A simple distillation column is designed to separate an ideal binary mixture to specified distillate and bottoms purities at a given column pressure. If RRₘᵢₙ is the minimum reflux ratio for this separation, select the statement that is NOT CORRECT with regard to the variation in the total annualized cost (TAC) of the column with reflux ratio (RR).

Your answerChoose one option.

TAC has a minimum with respect to RR

The sharpest rise in TAC occurs as RR approaches RRₘᵢₙ from above

The sharpest decrease in TAC occurs as RR approaches RRₘᵢₙ from above

TAC increases with RR for RR ≫ RRₘᵢₙ

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The reaction

is carried out isothermally on a porous catalyst. The intrinsic reaction rate is

, where

is the rate constant and

is the concentration of

. If the reaction is strong pore-diffusion controlled, the observed order of the reaction is

Your answerChoose one option.

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In an enzymatic reaction, an inhibitor (I) competes with the substrate (S) to bind with the enzyme (E), thereby reducing the rate of product (P) formation. The competitive inhibition follows the reaction mechanism shown below. Let [S] and [I] be the concentration of S and I, respectively, and

be the rate of consumption of S. Assuming pseudo-steady state, the correct plot of

Diagram for Chemical Engineering question 27

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Diagram for Chemical Engineering question 27 (figure 2)

Diagram for Chemical Engineering question 27 (figure 3)

Diagram for Chemical Engineering question 27 (figure 4)

Diagram for Chemical Engineering question 27 (figure 5)

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2022 · Paper 1

Question 25

Question 26

Question 27