Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2132102 Metallurgical Thermodynamics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Give applications of thermodynamics. 03

(b) Explain system and surroundings. 04

(c) With proper example prove that Energy, a state property. 07

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Q.2 (a) Explain and state types of equilibrium. 03

(b) State zeroth law of thermodynamics and give its importance. 04

(c) State 1st and 2nd Law of thermodynamics and give its significance. 07

OR

(c) Define Specific heat and derive relationship Cp - Cv =R. 07

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Q.3 (a) Explain Van’t Hoff equation. 03

(b) Explain Quasi- static process. 04

(c) Compare and contrast Hess’ law and Kirchhoff’s law. 07

OR

Q.3 (a) What are functions of slag? 03

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(b) Explain the concept of basicity index. 04

(c) What is free energy? Derive equation for Gibb’s free energy. 07

Q.4 (a) Define fugacity. 03

(b) Write a short note on Clausius-Clapeyron equation. 04

(c) State & explain Ellingham diagram for various metal oxides? 07

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OR

Q.4 (a) Explain heat of formation with example. 03

(b) Explain reversible and irreversible changes. 04

(c) Explain Raoult’s law and Henry’s law. 07

Q.5 (a) Write formula for Mol fraction and give definition of Molality, 03

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(b) Define Atom-fraction. Write conversion from weight % to atom % 04
or vice-versa.

(c) Briefly explain thermodynamics of Slag — Metal reaction. 07

OR

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Q.5 (a) Explain 1wt % Standard State. 03

(b) Calculate the standard enthalpy change for the following reaction at 04
1523K. Cu₂S (s) + 2Cu₂0 (s) =6 Cu (1) + SO₂ (g)
Given the value of standard enthalpy change of formation at 1523K.
?H°_f,1523 kJ/mol Cu₂S (s) = -86.7; Cu₂0 (s) = -176.4; SO₂ (g) = -278.4

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(c) State & derive Maxwell’s equation from combined statement of first 07
& second law.

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