GATE CH discipline:chemical-engineering PYQs & Answers — Page 22

Questions 211–220 of 650. Imported answers require independent review unless marked reviewed.

Which one of the following options represents the major components of oleum?

Your answerChoose one option.

Sulfuric acid and nitric acid

Concentrated sulfuric acid and petrol jelly

Sulfuric acid and hydrochloric acid

Sulfuric acid and sulfur trioxide

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For a reversible endothermic chemical reaction with constant heat of reaction over the operating temperature range,

is the thermodynamic equilibrium constant. Which one of the following figures shows the CORRECT dependence of

on temperature

Your answerChoose one option.

Diagram for Chemical Engineering question 17

Diagram for Chemical Engineering question 17 (figure 2)

Diagram for Chemical Engineering question 17 (figure 3)

Diagram for Chemical Engineering question 17 (figure 4)

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Nitrile rubber is manufactured via polymerization process. Which one of the following options is the CORRECT pair of monomers used in this process?

Your answerChoose one option.

Acrylonitrile and styrene

Acrylonitrile and butadiene

Butadiene and styrene

Butadiene and isoprene

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John and Jane independently performed a thermodynamic experiment, in which X and Y represent the initial and final thermodynamic states of the system, respectively. John performed the experiment under reversible conditions, for which the change in entropy of the system was

. Jane performed the experiment under irreversible conditions, for which the change in entropy of the system was

. Which one of the following relationships is CORRECT?

Your answerChoose one option.

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For a packed-bed comprising of uniform-sized spherical particles of diameter

, the pressure drop across the bed is given by the Kozeny-Carman equation when the particle Reynolds number (

) < 1. Under this condition, minimum fluidization velocity is proportional to

. Which one of the following is the CORRECT value of exponent

Your answerChoose one option.

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Match the quantities in Group 1 with their units in Group 2 listed in the table below.

Group 1	Group 2
P) Thermal conductivity	I) W·m⁻²K⁻¹
Q) Convective heat transfer coefficient	II) W·m⁻¹K⁻¹
R) Stefan-Boltzmann constant	III) W·K⁻¹
S) Heat capacity rate	IV) W·m⁻²K⁻⁴

Your answerChoose one option.

P-II, Q-I, R-IV, S-III

P-I, Q-II, R-III, S-IV

P-III, Q-IV, R-II, S-I

P-IV, Q-I, R-III, S-II

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A slab of thickness

, as shown in the figure below, has cross-sectional area

and constant thermal conductivity

and

are the temperatures at

and

, respectively. Which one of the following options is the CORRECT expression of the thermal resistance for steady-state one-dimensional heat conduction?

Diagram for Chemical Engineering question 22

Your answerChoose one option.

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Spray dryers have many advantages. Which one of the following is NOT an advantage of a typical spray dryer?

Your answerChoose one option.

Has short drying time

Produces hollow spherical particles

Has high heat efficiency

Is suitable for heat sensitive materials

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Which one of the following quantities of a flowing fluid is measured using a rotameter?

Your answerChoose one option.

Static pressure

Dynamic pressure

Volumetric flow rate

Viscosity

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A liquid surge tank has

and

as the inlet and outlet flow rates respectively, as shown in the figure below.

is proportional to the square root of the liquid level

. The cross-sectional area of the tank is 20 cm². Density of the liquid is constant everywhere in the system. At steady state,

cm³s⁻¹ and

cm. The variation of

with

is approximated as a first order transfer function. Which one of the following is the CORRECT value of the time constant (in seconds) of this system?

Diagram for Chemical Engineering question 25

Your answerChoose one option.

128

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GATE CH discipline:chemical-engineering PYQs

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25