Metallurgical Thermodynamics and Kinetics MCQ Questions and Answers

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Enhance your knowledge of Metallurgical Thermodynamics and Kinetics with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Metallurgical Thermodynamics and Kinetics are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-7 section-1

Each section contains 100 MCQs on Metallurgical Thermodynamics and Kinetics .

The formulae for change in entropy

A) $$\Delta S = Rln\left( {\frac{{{V_2}}}{{{V_1}}}} \right) = - R\ln \left( {\frac{{{P_2}}}{{{P_1}}}} \right),$$ B) $$\Delta S = {C_P}\ln \left( {\frac{{{T_2}}}{{{T_1}}}} \right),$$ C) $$\Delta S = {C_V}\ln \left( {\frac{{{T_2}}}{{{T_1}}}} \right),$$ D) All are correct

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Answer & Solution

Answer: Option D

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Critical value of the Gibbs energy of nucleation at equilibrium temperature is

A) zero B) Infinite C) positive D) negative

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Answer & Solution

Answer: Option B

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The constant term "2" in mathematical expression for phase rule is stands for

A) temperature B) pressure C) number of phases D) both A and B

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Answer & Solution

Answer: Option D

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Consider a reaction with activation energy of 8.314 kJ/mol that takes place at 300 K. If the reaction rate is to be tripled, the temperature of the reaction should be

A) 174.5 K B) 447.5 K C) 600.5 K D) 847.5 K

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Answer & Solution

Answer: Option B

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During the reduction of an oxide of hydrogen gas, it is observed that the rate of reaction increases by almost three fold due to a slight increases in temperature. The most likely rate controlling step is

A) inward mass transfer of hydrogen gas B) outward mass transfer of H₂O C) chemical reaction at gas metal interface D) combined mass transfer of H₂ and H₂O

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Answer & Solution

Answer: Option D

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The chemical potential of a component 1 in a solution is given by, μi =

A) $$\left( {\frac{{\delta E}}{{\delta {n_1}}}} \right)T,P,{n_2},{n_3}...$$ B) $$\left( {\frac{{\delta H}}{{\delta {n_1}}}} \right)S,V,{n_2},{n_3}...$$ C) $$\left( {\frac{{\delta A}}{{\delta {n_1}}}} \right)T,V,{n_2},{n_3}...$$ D) $$\left( {\frac{{\delta G}}{{\delta {n_1}}}} \right)P,V,{n_2},{n_3}...$$

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Answer & Solution

Answer: Option D

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Isothermal compressibility of a material is given by

A) $$ - \frac{1}{P}{\left( {\frac{{\partial V}}{{\partial P}}} \right)_T}$$ B) $$\frac{1}{P}{\left( {\frac{{\partial V}}{{\partial P}}} \right)_T}$$ C) $$ - \frac{1}{V}{\left( {\frac{{\partial V}}{{\partial P}}} \right)_T}$$ D) $$\frac{1}{V}{\left( {\frac{{\partial V}}{{\partial P}}} \right)_T}$$

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Answer & Solution

Answer: Option C

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The process in which all small steps are in equilibrium, so that entire process is in equilibrium is

A) adiabatic isothermal process B) isothermal process C) quasi-static process D) isobaric process

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Answer & Solution

Answer: Option C

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pure nickel melts at 1726K at 10⁵ Pa (1 atm.) pressure, ΔV (solid-liquid) = 0.26 × 10^-6 m³ . mol^-1 and the heat of fusion, ΔHf = 18000 J.mol^-1. The melting point of pure nickel, when acted upon by a pressure of 10⁸ Pa is . . . . . . . . K.

A) 1701.5 B) 1723.5 C) 1728.5 D) 1751. 5

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Answer & Solution

Answer: Option B

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What will be the degree of freedom for single phase system of binary system?

A) 1 B) 2 C) 3 D) 4

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Answer & Solution

Answer: Option B

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Metallurgical Thermodynamics and Kinetics MCQ Questions and Answers | Metallurgical Engineering