MCQ quiz on Corrosion multiple choice questions and answers on Corrosion MCQ questions on Corrosion objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams.

Corrosion MCQ Questions and Answers Quiz

1. Chemical formula of Rust is

  1. Fe2O3
  2. FeO
  3. Fe3O4
  4. Fe2O3.XH2O

2. Electrochemical corrosion takes place on

  1. Anodic area
  2. Cathodic area
  3. Near cathode
  4. Near anode

3. Lower is PH, corrosion is

  1. Greater
  2. Lower
  3. Constant
  4. None of above

4. Process of corrosion enhanced by

  1. AIR & Moisture
  2. Electrolytes in water
  3. Metallic impurities
  4. All of above

5. Smaller the grain size, corrosion is

  1. Greater
  2. Lower
  3. Constant
  4. Doesnt affected

6. Standard electrode potential of Al / Al3+ is

  1. + 0.66V
  2. - 0.66 V
  3. - 1.66 V
  4. + 1.66 V

7. Standard electrode potential of Fe2+/Fe is

  1. + 0.44 V
  2. - 0.44 V
  3. + 1.44 V
  4. - 1.44 V

8. Standard electrode potential of hydrogen is

  1. 1.00 V
  2. 0.00 V
  3. 0.01 V
  4. 0.001 V

9. Standard electrode potential of Zn2+/ Zn is

  1. - 0.76 V
  2. + 0.76 V
  3. - 2.76 V
  4. + 2.76 V

10. Volatile oxidation corrosion product of a metal is

  1. Fe2O3
  2. MoO3
  3. Fe3O4
  4. FeO
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MCQ Multiple Choice Questions and Answers on Corrosion

Corrosion Question and Answer