Electrometallurgy And Corrosion — Part 2 MCQs with Explanations

Silverware, galvanized steel, and tin cans is the correct answer to “Which of the following is/are the examples for metal-coated articles”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Primary passive potential is the correct answer to “The passive film in stainless steel forms above the”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Coating metal is vaporized electrically to deposit on the metals to be coated is the correct answer to “What is meant by vapor deposition”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

y2 = 2K1t + K2 is the correct answer to “The thickness of oxide film is 'y' at a time 't' If K 1 , K 2 and K 3 are the temperature dependent constants, the parabolic law of oxidation is given by”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Zinc is the correct answer to “Which of the following metals is highest active in the Galvanic series”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

cathodic protection is the correct answer to “A pipeline buried in soil is commonly protected from corrosion by”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Rate of reaction is not predicted and it neglects the impurities of working conditions is the correct answer to “Which of the following is/are the limitations of Pourbaix diagrams”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Martensitic steel are less susceptible to pitting corrosion than austenitic steels is the correct answer to “Identify the false statement:”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Anodic dissolution of typical active-passive transition metal is the correct answer to “What is depicted in the given polarization curve”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Fe is the correct answer to “Which of the following metal does not resists the corrosion process”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

close to 1 is the correct answer to “For oxide layer to be protective, the Pilling Bedworth ratio should be”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

- 155 V is the correct answer to “AI 2 O 3 + 6H + = 3H 2 O + 2Al, ΔG° = 897.3 kJ, where hydrogen ion concentration is unity. The reaction potential of the above reaction under standard state will be”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

P-2, Q-4, R-5, S-3 is the correct answer to “Match applications in Group 1 with the commonly used corrosion protection methods in Group 2 . Group 1 Group 2 P. Sea going vessel 1. Inorganic coating Q. Undergrciund pipeline 2. Sacrificial anode R. Electric traction tower 3. Aluminium paint S. Electric poles 4. Impressed current 5. Galvanising”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

P-2, Q-3, R-4, S-1 is the correct answer to “Match the following: P. Sensitization 1. Phosphating Q. Sacrificial anode 2. Anodic protection R. Nickel plating 3. Cathodic protection S. Conversion coating 4. Stainless steel”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

All are correct is the correct answer to “Displacement of metal stands for”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.

Magnesium is the correct answer to “The following is employed as sacrificial anode to provide cathodic protection to ships, pipelines and storage tanks :”. This question is standard in competitive examination syllabi for Electrometallurgy And Corrosion.