GATE CH topic:chemical-processes PYQs & Answers — Page 7

Questions 61–70 of 650. Imported answers require independent review unless marked reviewed.

The flooding velocity curves for two different structured packings are shown in the figure. The ratio of mass velocities of liquid (

) to that of the gas (

) is 1.27. The density of the liquid (

) is 1200 kg m⁻³ and that of the gas (

) is 1.2 kg m⁻³. For both the packings, the allowable superficial vapor velocity is 60% of flooding velocity (

). The ratio of allowable mass velocity of the vapor in packing P to that in packing Q is __________ (rounded off to one decimal place).

Diagram for Chemical Engineering question 61

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Consider a differential equation:

The value of y at x = 2 is ______ (rounded off to two decimal places).

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The data given in the table are fitted to the equation

using the method of least squares. The value of m is _____ (rounded off to one decimal place).

	1	2	3	4
	2	6	7	10

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Cyclohexane (C₆H₁₂) is produced from benzene (C₆H₆) and hydrogen (H₂) according to the following reaction.

Consider the process flow diagram shown in the figure.

Diagram for Chemical Engineering question 64

In this process, the overall and single-pass conversions are 90% and 25%, respectively. The recycle stream contains 25 mol % C₆H₆ and 75 mol % H₂. If the fresh feed contains 25% excess H₂, at steady state, the ratio of the molar flow rate of recycle stream to that of the fresh feed is _________ (rounded off to one decimal place).

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The velocity profile for a fully developed laminar flow of an incompressible Newtonian fluid, at steady state, through a horizontal infinitely wide and long slit of gap 0.01 m is given by the following equation.

where y is the vertical distance measured from the center of the slit. The average velocity of the fluid (in m s⁻¹) is __________ (rounded off to the nearest integer).

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Is there any good show ______ television tonight?

Select the most appropriate option to complete the above sentence.

Your answerChoose one option.

within

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As the police officer was found guilty of embezzlement, he was ______ dismissed from the service in accordance with the Service Rules.

Select the most appropriate option to complete the above sentence.

Your answerChoose one option.

sumptuously

brazenly

unintentionally

summarily

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The sum of the following infinite series is:

Your answerChoose one option.

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A thin wire is used to construct all the edges of a cube of 1 m side by bending, cutting and soldering the wire. If the wire is 12 m long, what is the minimum number of cuts required to construct the wire frame to form the cube?

Your answerChoose one option.