Corrosion Engineering Modern Theory Principles Polarization 1 Online Exam Quiz
Corrosion Engineering Modern Theory Principles Polarization 1 GK Quiz. Question and Answers related to Corrosion Engineering Modern Theory Principles Polarization 1. MCQ (Multiple Choice Questions with answers about Corrosion Engineering Modern Theory Principles Polarization 1
Which of the following mentioned is/are the types of polarization?
Options
A : Activation polarization
B : Concentration polarization
C : Resistance polarization
D : Activation, concentration and resistance polarization
What is the symbol of overvoltage?
Options
A : Alpha (?)
B : Beta (?)
C : Eta (?)
D : Delta (?)
What is meant by an anode?
Options
A : An electrode at which reduction process takes place
B : An electrode at which oxidation process takes place
C : An electrode at which neither the oxidation nor reduction takes place
D : An electrode at which both oxidation and reduction takes place
What is depicted in the given figure?
Options
A : Concentration polarization of hydrogen-hydrogen ion
B : Resistance polarization of hydrogen-hydrogen ion
C : Activation polarization of hydrogen-hydrogen ion
D : Both activation and concentration polarization of hydrogen-hydrogen ion
Which of the following is correct regarding Polarization?
Options
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.
Which of the following metal shows the highest exchange current density for hydrogen-hydrogen ion as per given figure?
Options
A : Mercury
B : Iron
C : Platinized platinum
D : Platinum
What is the relationship between reaction rate and overvoltage for activation polarization?
Options
A : na=±?log(i0/i)
B : na=±?log(I/i0)
C : na=±?log(1-i0/i)
D : na=±?log(1-i/i0)
What is the formula to calculate rate of oxidation or rate of reduction during equilibrium?
Options
A : r0=rR=i0nF
B : r0=rR=i0/nF
C : r0=rR=i0n/F
D : r0=rR=nF/i0
Which of the following is the controlling factor of Activation polarization?
Options
A : The activation energy of a reaction
B : Diffusion of ions in the solution
C : The temperature of a solution
D : The velocity of a solution
Exchange current density is the current per unit area of either oxidation or reduction process at the equilibrium.
Options
A : True
B : False
C :
D :
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