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Electrochemical Corrosion - Corrosion Engineering MCQ Questions

Electrochemical Corrosion MCQs : Here you will find MCQ Questions related to "Electrochemical Corrosion" in Corrosion Engineering. These Electrochemical Corrosion 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

Which of the following true about Electrochemical corrosion?

A. Electrochemical corrosion of metals occurs when proton from atoms at the surface of the metal are transferred to a suitable proton acceptor or depolarizer.
B. Electrochemical corrosion of metals occurs when neutron from atoms at the surface of the metal are transferred to a suitable neutron acceptor or depolarizer.
C. Electrochemical corrosion of metals occurs when electrons from atoms at the surface of the metal are transferred to a suitable electron acceptor or depolarizer.
D. All of the above

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Question 2

__________ must be present to serve as a medium for the transport of ions.

A. Hydrogen
B. Water
C. Oxygen
D. Air

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Question 3

The most common depolarizers are?

A. oxygen
B. acids
C. zinc
D. Both A and B

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Question 4

Corrosion of steel can be inhibited by galvanizing

A. Yes
B. No
C. Can be yes or no
D. Can not say

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Question 5

Which of the following are the types of chemical reactions?

A. Combination and Decomposition reactions
B. Combination and Single displacement
C. Single and Double displacement reaction
D. Combination, Decomposition, Single displacement and double displacement

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Question 6

Which of the following parameter of electrolyte decreases the corrosion rate?

A. Dissolved oxygen
B. Temperature
C. High electrical resistance
D. Presence of ferric ions

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Question 7

Polarization is the potential difference occurred due to the non-equilibrium conditions?

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

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Question 8

What is meant by passivation?

A. Loss of reactivity
B. Increase in reactivity
C. Increase in corrosion rate
D. Deterioration of metal

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Question 9

Which of the following is denoted as // in an electrochemical cell notation?

A. Anode
B. Salt bridge
C. Cathode
D. Electrolyte

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Question 10

Which of the following polarization will be influenced by electrolytic agitation?

A. Activation polarization
B. Resistance polarization
C. Concentration polarization
D. Both Activation and Resistance polarization

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