GATE CH branch:ch PYQs & Answers — Page 36

Questions 351–360 of 650. Imported answers require independent review unless marked reviewed.

For the function

the CORRECT statement(s) is/are

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

is continuous at

is differentiable at

is continuous at

is differentiable at

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Feed solution F is contacted with solvent B in an extraction process. Carrier liquid in the feed is A and the solute is C. The ternary diagram depicting a single ideal stage extraction is given below. The dashed lines represent the tie-lines.

Diagram for Chemical Engineering question 17

The CORRECT option(s) is/are

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

For the tie-lines shown, concentration of solute in the extract is higher than that in the raffinate

Maximum amount of solvent is required if the mixture composition is at W

Y represents the composition of extract when minimum amount of solvent is used

U represents the raffinate composition if the mixture composition is at M

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The inherent characteristics of three control valves P, Q and R are shown in the figure.

Diagram for Chemical Engineering question 18

The CORRECT option(s)) is/are

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

P is a quick opening valve

Q is a quick opening valve

P is an equal percentage valve

R is an equal percentage valve

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A source placed at the origin of a circular sample holder (radius

) emits particles uniformly in all directions. A detector of length

has been placed along the perimeter of the sample holder. During an experiment, the detector registers 14 particles.

The total number of particles emitted during the experiment is __________.

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and

are vectors of length 4.

It is known that

is not a scalar multiple of

. Also,

is linearly independent of

and

. Further,

The rank of the matrix

is __________.

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The van der Waals equation of state is given by

where

and

represent reduced pressure, reduced temperature and reduced molar volume, respectively. The compressibility factor at critical point (

) is 3/8.

and

, then the compressibility factor based on the van der Waals equation of state is __________ (round off to 2 decimal places).

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Consider a steady flow of an incompressible, Newtonian fluid through a smooth circular pipe. Let

and

denote the kinetic energy correction factors for laminar and turbulent flow through the pipe, respectively. For turbulent flow through the pipe

Here,

is the average velocity,

is the centerline velocity, and

is a parameter. The ratio of average velocity to the centerline velocity for turbulent flow through the pipe is given by

For

, the value of

is __________ (round off to 2 decimal places).

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The molar heat capacity at constant pressure

(in J mol⁻¹ K⁻¹) for n-pentane as a function of temperature (T in K) is given by

At 100 K, the rate of change of molar entropy of n-pentane with respect to temperature at constant pressure is __________ J mol⁻¹ K⁻² (round off to 2 decimal places).

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The following homogeneous liquid phase reactions are at equilibrium.

Diagram for Chemical Engineering question 24

The values of rate constants are given by:

The value of rate constant

is __________

(round off to 1 decimal place).

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A company invests in a recovery unit to separate valuable metals from effluent streams. The total initial capital investment of this unit is Rs. 10 lakhs. The recovered metals are worth Rs. 4 lakhs per year. If the annual return on this investment is 15%, the annual operating costs should be ______ lakhs of rupees (correct to 1 decimal place).

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GATE CH branch:ch PYQs

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25