Chemistry Thermodynamic Principles Metallurgy Online Exam Quiz
Chemistry Thermodynamic Principles Metallurgy GK Quiz. Question and Answers related to Chemistry Thermodynamic Principles Metallurgy. MCQ (Multiple Choice Questions with answers about Chemistry Thermodynamic Principles Metallurgy
Under what condition can Al reduce MgO?
Options
A : Above 1000°C
B : Below 1000°C
C : Above 1350°C
D : Below 1350°C
How can a reaction with positive ?G be made to occur?
Options
A : By increasing the temperature
B : By decreasing the temperature
C : By coupling it with another reaction
D : It is not possible for the reaction to occur
How are the oxides of less reactive metals like silver and mercury reduced?
Options
A : By thermal decomposition
B : By electrolysis
C : By using reducing agents
D : Cannot be reduced
Which of the following is false regarding the Ellingham diagram?
Options
A : It consists of plots of ?fG° vs T
B : Ellingham diagrams are based on thermodynamic concepts
C : They do not tell us anything about the kinetics of the reduction process
D : They do not assume reactant-product equilibrium
What does the Ellingham diagram consist of?
Options
A : Plots of ?fG° vs T
B : Plots of T vs ?fG°
C : Plots of ?fG° vs ?S
D : Plots of ?S vs ?fG°
Ellingham Diagram does not give any information regarding the kinetics of the reduction process.
Options
A : True
B : False
C :
D :
Any metal will reduce the oxide of other metals which lie below it in the Ellingham diagram.
Options
A : True
B : False
C :
D :
Which of the following is the correct Gibbs equation?
Options
A : ?G = ?H + T?S
B : ?G = ?H – T?S
C : ?G = ?H – 2T?S
D : ?G = ?H – 3T?S
What is the criterion of the feasibility of a reaction at any temperature?
Options
A : ?G of the reaction must be positive
B : ?G of the reaction must be negative
C : ?G of the reaction must be equal to zero
D : Does not depend on ?G of the reaction
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