GATE Metallurgical - GATE 2017-2018 Questions and Answers

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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 processes 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

P, Q and R

Q, R and S

P, Q and S

P, R and S

Answer : Option C

Explanation :

-NA-

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