Metallurgical Engineering
GATE MT concept:regular-solutions PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:regular-solutions
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 1–3 of 3. Imported answers require independent review unless marked reviewed.
Question 21
Open questionMTMCQ1 markNeeds review
For a regular solution, which one of the following statements is correct?
(ΔHₘᵢₓ is the enthalpy of mixing and ΔSₘᵢₓ is the entropy of mixing)
Your answerChoose one option.
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 55
Open questionMTNAT2 marksNeeds review
Enthalpy of formation of an A–B regular solution containing 80 atomic percent A is 3.36
. The activity coefficient of A at 500 K for the solution containing 40 atomic percent A is __________ (round off to 1 decimal place).Given: Universal gas constant, R = 8.314
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 53
Open questionMTNAT2 marksNeeds review
The partial molar enthalpy of Au in an Ag-Au melt containing 25 mol% Au at 1400 K is −8300 J·mol⁻¹. Assuming regular solution behavior, the activity of Au in the melt is ______ (round off to 3 decimal places).
Given:
J·K⁻¹·mol⁻¹Log 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 answer