Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2132102 Metallurgical Thermodynamics Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132102 Date: 01/12/2018
Subject Name: Metallurgical Thermodynamics
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain basic terms in thermodynamics:
1) Isolated system,
2) Closed system,
3) Open System.
03
(b) What is the significance of first law of thermodynamics? 04
(c) What is Free Energy? Explain concept of Gibb?s Free Energy.
07
Q.2 (a) Multiple Choice Questions:
1) In Ellingham diagram, ?G vs. T plot for 2C+O 2 ? 2CO
with negative gradient intersects the plot of 2Fe + 3O 2 ?
Fe2O3 with positive gradient at 700 degree C. This implies
that
a. It is feasible to oxidize iron using C at temperature
above 700 degree C
b. It is feasible to reduce Fe2O3 using C at
temperature below 700 degree C
c. It is feasible to sinter iron powder with C packing
at temperature below 700 degree C
d. It is feasible to sinter iron powder with C packing
at temperature above 700 degree C
2) With regard to enthalpy, which one of the following is
true?
a. Enthalpy is the total heat content
b. H = E + PV
c. dH = dq + VdP
d. All of the above
3) Which one of the following sentence is true?
a. A reaction is feasible if ?G is positive
b. A reaction is feasible if ?G is zero
c. A reaction is feasible if ?G is negative
d. Can?t predict the feasibility of reaction from ?G
03
(b) Compare and contrast Extensive properties and Intensive
properties.
04
(c) Compare and contrast Hess? law and Kirchhoff?s law. 07
OR
(c) Explain reversible and irreversible processes. 07
Q.3 (a) Explain Quasi- static process. 03
(b) Explain temperature composition diagram for binary alloy system. 04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132102 Date: 01/12/2018
Subject Name: Metallurgical Thermodynamics
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain basic terms in thermodynamics:
1) Isolated system,
2) Closed system,
3) Open System.
03
(b) What is the significance of first law of thermodynamics? 04
(c) What is Free Energy? Explain concept of Gibb?s Free Energy.
07
Q.2 (a) Multiple Choice Questions:
1) In Ellingham diagram, ?G vs. T plot for 2C+O 2 ? 2CO
with negative gradient intersects the plot of 2Fe + 3O 2 ?
Fe2O3 with positive gradient at 700 degree C. This implies
that
a. It is feasible to oxidize iron using C at temperature
above 700 degree C
b. It is feasible to reduce Fe2O3 using C at
temperature below 700 degree C
c. It is feasible to sinter iron powder with C packing
at temperature below 700 degree C
d. It is feasible to sinter iron powder with C packing
at temperature above 700 degree C
2) With regard to enthalpy, which one of the following is
true?
a. Enthalpy is the total heat content
b. H = E + PV
c. dH = dq + VdP
d. All of the above
3) Which one of the following sentence is true?
a. A reaction is feasible if ?G is positive
b. A reaction is feasible if ?G is zero
c. A reaction is feasible if ?G is negative
d. Can?t predict the feasibility of reaction from ?G
03
(b) Compare and contrast Extensive properties and Intensive
properties.
04
(c) Compare and contrast Hess? law and Kirchhoff?s law. 07
OR
(c) Explain reversible and irreversible processes. 07
Q.3 (a) Explain Quasi- static process. 03
(b) Explain temperature composition diagram for binary alloy system. 04
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2
(c) Define and explain the terms specific heat at constant pressure
(Cp) and specific heat at constant volume (Cv) and derive the
thermodynamics relationship between them.
07
OR
Q.3 (a) What are objectives of thermodynamics and give applications of
thermodynamics.
03
(b) Write a short note on Sievert?s law. 04
(c) State & derive Maxwell?s equation from combined statement of
first & second law.
07
Q.4 (a) State zeroth law of thermodynamics and give its importance. 03
(b) State & define second law of thermodynamics & its significance. 04
(c) Explain thermodynamic solution and differentiate between ideal
and non ideal solutions.
07
OR
Q.4 (a) Write a short note on Van?t Hoff equation 03
(b) What is equilibrium? Explain different type of equilibrium. 04
(c) State & explain Ellingham diagram for various metal oxides? 07
Q.5 (a) What are functions of slag? 03
(b) Explain the concept of basicity index. 04
(c) Briefly explain thermodynamics of Slag ? Metal reaction. 07
OR
Q.5 (a) Explain Phase, component & Degrees of Freedom? 03
(b) What is Gibb?s phase rule? Explain the importance of phase rule.
Derive Gibb?s phase rule
04
(c) Explain Raoult?s law and Henry?s law. 07
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This post was last modified on 20 February 2020