Q. Which of the following is more stable form of iron in an oxygenated solution?

View solution

Q. Which of the following are the types of chemical reactions?

View solution

Q. More than one anodic and cathodic reactions are possible in corrosion.

View solution

Q. Oxygenated acids are more corrosive than oxygen-free acids.

View solution

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

View solution

Q. Which of the following are the types of polarization?

View solution

Q. Concentration polarization is considered in both anodic and cathodic reactions.

View solution

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

View solution

Q. What is meant by passivation?

View solution

Q. What is the trans passive region?

View solution

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

View solution

Q. Which of the following gives Standard cell potential of a cell (E⁰)?

View solution

Q. Which of the following is a Nernst equation?

View solution

Q. Zn/Zn⁺²(0.1M)//Ag⁺¹(1M)/Ag is the cell notation of zinc dissolution in silver. Then what is the Electrode potential of the cell formed? (T=298K, F=96500, R=8.314 J/Kg*K)

View solution

Q. Passivity is achieved only if a sufficient quantity of oxidizer is added to the medium.

View solution

Q. Which of the following metal-acid combination will shift metal from active to passive state with an increase in oxidizer concentration?

View solution

Q. What is the nature of copper corrosion in oxygenated sulfuric acid?

View solution

Q. The corrosion rate depends on both the medium and the metal involved.

View solution

Q. What is the other name of concentration polarization?

View solution

Q. Which of the following metals are more corrosion resistant in a high-velocity corrosive solution?

View solution