Chemical Engineering
GATE CH branch:ch PYQs
Build your understanding with focused practice from past exam papers.
Questions 451–460 of 650. Imported answers require independent review unless marked reviewed.
Question 51
Open questionCHNAT2 marksNeeds review
A catalytic gas phase reaction
is conducted in an isothermal packed bed reactor operated at steady state. The reaction is irreversible and second order with respect to the reactant P. The feed is pure P with a volumetric flow rate of 1.0 liter minute
and concentration of 2.0 mol liter
.In addition, use the following assumptions:
The reactant and product are ideal gases
There is no volume change associated with the reaction
Ideal plug flow conditions prevail in the packed bed
When the mass of catalyst in the reactor is 4 g, the concentration of P measured at the exit is 0.4 mol liter
. The second order rate constant (in liter
g
mol
minute
) is ________ (correct up to one decimal place).Log in to check the answer
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Open questionCHNAT2 marksNeeds review
Flow of water through an equal percentage valve is 900 liter h
at 30% opening, and 1080 liter h
at 35% opening. Assume that the pressure drop across the valve remains constant. The flow rate (in liter h
) through the valve at 45% opening is ________ (round off to nearest integer).Log in to check the answer
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Open questionCHNAT2 marksNeeds review
Consider the following closed loop system.
,
, and
are the transfer functions of the controller, the final control element and the process, respectively.
and
are the response and its set point, respectively. For a gain margin of 1.6, the design value of
is ________ (correct up to one decimal place).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 54
Open questionCHNAT2 marksNeeds review
Given
, and
, the value of
at
is ________ (round off to nearest integer).Log in to check the answer
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Open questionCHNAT2 marksNeeds review
Consider the following dataset:
| 1 | 3 | 5 | 15 | 25 |
|---|---|---|---|---|---|
| 6 | 8 | 10 | 12 | 5 |
The value of the integral
using Simpson’s 1/3rd rule is ________ (round off to 1 decimal place).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
Open questionGAMCQ1 markNeeds review
The expenditure on the project _____ as follows: equipment Rs.20 lakhs, salaries Rs.12 lakhs, and contingency Rs.3 lakhs.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
The search engine’s business model _____ around the fulcrum of trust.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
Two cars start at the same time from the same location and go in the same direction. The speed of the first car is 50 km/h and the speed of the second car is 60 km/h. The number of hours it takes for the distance between the two cars to be 20 km is ____.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
Ten friends planned to share equally the cost of buying a gift for their teacher. When two of them decided not to contribute, each of the other friends had to pay Rs 150 more. The cost of the gift was Rs. ____.
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
A court is to a judge as _____ is to a teacher.
Your answerChoose one option.
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