Corrosion Engineering Online Quiz Online Exam Quiz
Corrosion Engineering Online Quiz GK Quiz. Question and Answers related to Corrosion Engineering Online Quiz. MCQ (Multiple Choice Questions with answers about Corrosion Engineering Online Quiz
What is the range of current density around corrosion potential that will observe that the applied current density is a linear function of the electrode potential?
Options
A : 10 mV more noble or active around corrosion potential
B : 5 mV more noble or active around corrosion potential
C : 10 V more noble or active around corrosion potential
D : 5 V more noble or active around corrosion potential
What is meant by anodic protection?
Options
A : Accompanying the sacrificial metal with metallic structure
B : Prevention of corrosion by impressed cathodic current by supply electrons
C : Prevention of corrosion by the impressed anodic current is used to transform from active to a passive state
D : Additions of oxidizers and oxidizing agents for the formation of an oxide layer
Stainless steels containing small quantities of platinum passivates more readily in the presence of oxygen, ferric salts, and other oxidizing agents.
Options
A : False
B : True
C :
D :
The applied current cathodic polarization curve of a corroding metal is non-linear at low currents, but it becomes linear at higher currents on a semilogarithmic plot.
Options
A : False
B : True
C :
D :
Which of the following is/are the limitations of Tafel extrapolation?
Options
A : For reasonable accuracy, the Tafel region must be extended
B : It can be applied to systems containing one reduction process only
C : Much interference from concentration polarization
D : It can be applied to systems containing one reduction process, for reasonable accuracy the Tafel region must be extended and there will be much interference from concentration polarization
Which of the following is/are the advantages of Tafel extrapolation?
Options
A : It can measure extremely low corrosion rates
B : It can be used for continuously monitoring the corrosion rate of a system
C : It can be used for continuously monitoring the corrosion rate of a system with high accuracy and measures extremely low corrosion rates
D : It can be performed rapidly with high accuracy
Which of the following industries uses Tafel extrapolation or linear polarization to measure low corrosion rates?
Options
A : Nuclear industries
B : Pharmaceutical industries
C : Food processing industries
D : Nuclear, pharmaceutical and food processing industries
Which of the following noble metals will improve the corrosion resistance of titanium and chromium on galvanic coupling?
Options
A : Platinum
B : Palladium
C : Rhodium
D : Platinum, palladium, and rhodium
Which of the following is described in the given figure?
Options
A : Protection range for anodic protection for an active metal
B : Protection range for anodic protection for an active-passive transition metal
C : Protection range for cathodic protection for an active-passive transition metal
D : Protection range for cathodic protection for an active metal
Which of the following electrochemical methods is/are used to determine the corrosion rate?
Options
A : Tafel extrapolation
B : Linear polarization
C : Tafel extrapolation and linear polarization
D : Neither Tafel extrapolation nor linear polarization
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