GATE CH kind:question PYQs & Answers — Page 10

Questions 91–100 of 650. Imported answers require independent review unless marked reviewed.

The capital cost (

) of an industrial equipment varies with its capacity (

) as

. The rule-of-thumb value of the exponent

Your answerChoose one option.

0.4

0.6

0.8

1.0

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the production of polyvinyl chloride (PVC) from ethylene and chlorine, the sequential order of reactions is

Your answerChoose one option.

Chlorination followed by Dehydrochlorination

Dehydrochlorination followed by Chlorination

Hydrogenation followed by Chlorination

Dehydrochlorination followed by Hydrogenation

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the CONTACT PROCESS for manufacturing sulphuric acid, the reaction converting

Your answerChoose one option.

Exothermic and reversible

Endothermic and reversible

Exothermic and irreversible

Endothermic and irreversible

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Choose the option that correctly matches the items in Group 1 with those in Group 2.

Group 1	Group 2
(P) Coking	(I) Prolonged exposure of catalyst to high temperature
(Q) Poisoning	(II) Deposition of carbonaceous material on catalyst surface
(R) Sintering	(III) Irreversible chemisorption of molecules on active sites of catalyst

Your answerChoose one option.

(P) – (III), (Q) – (I), (R) – (II)

(P) – (II), (Q) – (III), (R) – (I)

(P) – (II), (Q) – (I), (R) – (III)

(P) – (I), (Q) – (III), (R) – (II)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which of the following statements regarding multiple effect evaporators is/are TRUE?

Your answerSelect all correct options. You can choose more than one.

The pressure of the effect with fresh steam is the lowest for both forward feed and backward feed.

Backward feed is preferred over forward feed for cold feed.

Backward feed is preferred over forward feed for highly viscous concentrated product.

The temperature of the effect with fresh steam is the lowest for both forward feed and backward feed.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider an enzymatic reaction that follows Michaelis-Menten kinetics. Let

, and

denote the Michaelis constant, substrate concentration, and maximum reaction rate, respectively. Which of the following statements is/are TRUE?

Your answerSelect all correct options. You can choose more than one.

For

, the reaction is apparent first-order in

For

, the reaction rate is nearly independent of

For

, the rate of reaction equals

is independent of the total enzyme concentration.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The following data is given for a ternary

gas mixture at 12 MPa and 308 K:

Component →
	0.55	0.20	0.25
	0.75	0.80	0.95

: mole fraction of component

in the gas mixture

: fugacity coefficient of component

in the gas mixture at 12 MPa and 308 K

The fugacity of the gas mixture is ____ MPa (rounded off to 3 decimal places).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Ideal nonreacting gases

and

are contained inside a perfectly insulated chamber, separated by a thin partition, as shown in the figure. The partition is removed, and the two gases mix till final equilibrium is reached. The change in total entropy for the process is ____ J/K (rounded off to 1 decimal place).

Given: Universal gas constant

J/(mol K)

atm

Diagram for Chemical Engineering question 33

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Oil is extracted from mustard seeds having 20 wt% oil and 80 wt% solids, using hexane as a solvent. After extraction, the hexane-free residual cake contains 1 wt% oil. Assuming negligible dissolution of cake in hexane, the percentage oil recovery in hexane is ____% (rounded off to the nearest integer).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The residence-time distribution (RTD) function of a reactor (in min

) is

The mean residence time of the reactor is ____ min (rounded off to 2 decimal places).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE CH kind:question PYQs

Question 26

Question 27

Question 28

Question 29

Question 30

Question 31

Question 32

Question 33

Question 34

Question 35