Chemical Engineering
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CH 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 37–39 of 65. Imported answers require review unless explicitly marked reviewed.
Question 27
Open questionCHMCQ2 marksNeeds review
The maximum value of the function
in the interval
isYour answerChoose one option.
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Open questionCHMCQ2 marksNeeds review
SO₂ from air is absorbed by pure water in a counter current packed column operating at constant pressure. The compositions and the flow rates of the streams are shown in the figure.
In addition, use the following data and assumptions
• Column operates under isothermal conditions
• At the operating temperature of the column,
, where
is the mole fraction of SO₂ in the gas that is in equilibrium with water containing SO₂ at a mole fraction of
• Solution is dilute and the operating line is linear
• Negligible amount of water evaporatesThe number of transfer units (NTU) for this column is
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 29
Open questionCHMCQ2 marksNeeds review
Two film theory applies for absorption of a solute from a gas mixture into a liquid solvent. The interfacial mass transfer coefficient (in mol m⁻² s⁻¹) for the gas side is 0.1 and for the liquid side is 3. The equilibrium relationship is
, where
and
are mole fractions of the solute in the liquid and gas phases, respectively. The ratio of the mass transfer resistance in the liquid film to the overall resistance isYour answerChoose one option.
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