Question

Identify the correct statement:

• A. Corrosion of iron can be minimised by forming a contact with another metal with a higher reduction potential
• B. Iron corrodes in oxygen-free water
• C. Corrosion of iron can be minimised by forming an impermeable barrier at its surface
• D. Iron corrodes more rapidly in salt water because its electrochemical potential is higher

Answer 1

Answer: (C)

Corrosion of iron can be minimised by forming a contact with another metal with a lower reduction potential. Corrosion of iron can be minimised by forming an impermeable barrier at its surface.