Metallurgical Engineering
GATE MT concept:equilibrium-constant PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:equilibrium-constant
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–4 of 4. Imported answers require independent review unless marked reviewed.
Question 34
Open questionMTNAT1 markNeeds review
Consider the gas phase reaction:
At equilibrium for a particular temperature, the partial pressures of CO, O
, and CO
are found to be
atm,
atm, and 16 atm, respectively. The equilibrium constant for the reaction is _____
(rounded off to one decimal place).Log in to check the answer
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Open questionMTNAT2 marksNeeds review
Molten steel at 1900 K having dissolved hydrogen needs to be vacuum degassed.
The equilibrium partial pressure of hydrogen to be maintained to achieve 1 ppm (mass basis) of dissolved hydrogen is _____ Torr (rounded off to two decimal places).
Given: For the hydrogen dissolution reaction in molten steel (½ H
(g) = [H]), the equilibrium constant (expressed in terms of ppm of dissolved H) is:
1 atm = 760 Torr
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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 35
Open questionMTMCQ2 marksNeeds review
The equilibrium constant for the following reaction at 300 K is _____________.
C (graphite) + 2H₂ (g) → CH₄ (g)
Given: At 300 K, ΔH° = −74,900 J.mol⁻¹; ΔS° = −80 J.mol⁻¹.K⁻¹; R = 8.314 J.mol⁻¹.K⁻¹.
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 37
Open questionMTNAT2 marksNeeds review
In primary steelmaking, dissolved oxygen (O) reacts with carbon (C) to produce CO (g), at 1 atm pressure according to the reaction: C + O = CO (g). The equilibrium constant for this reaction is
, where T is in Kelvin. Assuming Henrian activity coefficient of both O and C to be unity, the dissolved oxygen content (in wt.%) of plain carbon steel melt with 0.7 wt.% C at 1600°C is __________ (answer up to four decimal places)Log in to check the answer
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