Chemical Engineering
GATE CH year:2017 PYQs
Build your understanding with focused practice from past exam papers.
Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.
Question 21
Open questionCHMCQ1 markNeeds review
An LVDT (Linear Variable Differential Transformer) is a transducer used for converting
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Open questionCHNAT1 markNeeds review
The cost of a new pump (including installation) is 24,000 Rupees. The pump has a useful life of 10 years. Its salvage value is 400 Rupees. Assuming straight line depreciation, the book value of the pump at the end of 4th year, rounded to the nearest integer, is ______ Rupees.
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The DCD (Double Contact Double Absorption) process is used for the manufacture of
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Open questionCHMCQ1 markNeeds review
Match the polymerization processes in Group-1 with the polymers in Group-2.
Group-1
P) Free radical polymerization
Q) Ziegler Natta polymerization
R) Condensation polymerization
Group-2
I) Nylon 6,6
II) Polypropylene
III) Poly vinyl chloride
Choose the correct set of combinations.
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Open questionCHMCQ1 markNeeds review
The purpose of methanation reaction used in ammonia plants is to
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Open questionCHNAT2 marksNeeds review
For the initial value problem
the value of
at
, is __________.Log in to check the answer
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Open questionCHMCQ2 marksNeeds review
The Laplace transform of a function is
The initial and final values, respectively, of the function are
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Open questionCHMCQ2 marksNeeds review
Match the problem type in Group-1 with the numerical method in Group-2.
Group-1
P) System of linear algebraic equations
Q) Non-linear algebraic equations
R) Ordinary differential equation
S) Numerical integration
Group-2
I) Newton-Raphson
II) Gauss-Seidel
III) Simpson’s rule
IV) Runge-Kutta
Choose the correct set of combinations.
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Open questionCHNAT2 marksNeeds review
A box has 6 red balls and 4 white balls. A ball is picked at random and replaced in the box, after which a second ball is picked.
The probability of both the balls being red, rounded to 2 decimal places, is ________.
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Open questionCHNAT2 marksNeeds review
An aqueous salt-solution enters a crystallizer operating at steady state at 25°C. The feed temperature is 90°C and the salt concentration in the feed is 40 weight %. The salt crystallizes as a pentahydrate. The crystals and the mother liquor leave the crystallizer. The molecular weight of the anhydrous salt is 135. The solubility of the salt at 25°C is 20 weight %.
The feed flowrate required for a production rate of 100 kg/s of the hydrated salt, rounded to the nearest integer, is ________ kg/s.
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