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Polarization - Corrosion Engineering MCQ Questions

Polarization MCQs : Here you will find MCQ Questions related to "Polarization" in Corrosion Engineering. These Polarization MCQ Questions Will help you to improve your Corrosion Engineering knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations




Question 1

Polarization may occur at the?

A. Cathod
B. Anode
C. Both A and B
D. Can not say

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Question 2

Polarization has the effect of ___________ the output voltage of batteries, and __________ the voltage required for electrolysis cells or lowering currents.

A. decreasing, decreasing
B. increasing, increasing
C. increasing, decreasing
D. decreasing, increasing

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Question 3

In how many ways, Polarization may occur?

A. 2
B. 3
C. 4
D. 5

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Question 4

Polarization is a mechanism that typically results in a change in the potential of an electrode during electrolysis.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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Question 5

cathodic polarization always ________ the corrosion rate.

A. increases
B. reduces
C. Remain same
D. None of the above

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Question 6

Which polarization occurs when the electrochemical reaction proceeds through several successive steps?

A. Concentration
B. Resistance
C. Activation
D. None of the above

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Question 7

What is the symbol of overvoltage?

A. Eta
B. Beta
C. Delta
D. Alpha

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Question 8

Which of the following is correct regarding Polarization?

A. It is the deviation from equilibrium potential
B. It results from the change in net current flow
C. Magnitude is measured in terms of overvoltage
D. It is the deviation from equilibrium potential that occurred due to the change in net current flow and its magnitude is measured in terms of overvoltage

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Question 9

Which two scientists present the first formal presentation on mixed potential theory?

A. Wagner and Traud
B. Wagner and Evans
C. Traud and Nernst
D. Wilsmore and Nernst

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Question 10

Which of the following is/are the hypothesis of mixed potential theory?

A. Any electrochemical reaction can be divided into two or more partial reactions
B. No net accumulation of electric charge during the reaction
C. Any electrochemical reaction can be divided into two or more partial reactions and no net accumulation of electric charge during the reaction
D. Electrochemical reactions can’t be divided into partial reactions

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