Electrometallurgy and Corrosion MCQ Questions and Answers | Metallurgical Engineering
Enhance your knowledge of Electrometallurgy and Corrosion with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Electrometallurgy and Corrosion 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-2 section-1
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A metal is electrochemically polarised to a potential which is higher than the standard reduction potential of the metal. The overvoltage will be
The difference in potential between two standard half cells is ΔE°. If the half cell are galvanically coupled, the value of ΔE°, with changes in concentration of ions in the solution, is such that
In electrolytic refining of nickel (Ni), the anode is Cu-10 atom% Ni and the cathode is pure Ni. Assuming the Cu-Ni solution to be ideal, the absolute value of the minimum voltage (in mv) required for refining is.
Given, Faraday's constant = 96490 C mole-1, Temperature = 300 K, R = 8.314 J. mol-1. K-1
Identify the correct combination of the following statements.
P. Hydrogen electrode is a standard used to measure redox potentials.
Q. Activation polarization refers to electrochemical process controlled by reaction sequence at metal-solution interface.
R. Potential-pH diagrams can be used to predict corrosion rates of metals.
S. Cathodic protection can use sacrificial anodes such as magnesium.
