Question

Statement I: The lower the pH greater is the corrosion.
Statement II: Electrochemical Corrosion always occurs at the anodic area.

• A. Both statement – I and Statement – II are correct
• B. Both statement – I and Statement – II are not correct
• C. Statement – I is correct but statement – II is not correct
• D. Statement – I is not correct but statement – II is correct

Hint:

Remember the mnemonic "AN OX": Anode involves Oxidation. Since corrosion is the oxidation of metal, it must happen at the anode.

Answer 1

The Correct Option is A

1. Analysis of Statement I: Corrosion is a process that is highly sensitive to the acidity of the environment. A lower pH indicates a higher concentration of $H^+$ ions (acidic medium). In acidic conditions, the reduction of $H^+$ ions to $H_2$ gas occurs more readily at the cathode, which speeds up the corresponding oxidation (corrosion) at the anode. Thus, the statement is

correct.

2. Analysis of Statement II: Electrochemical corrosion involves the formation of a galvanic cell. By definition, oxidation (loss of electrons) is the process of corrosion for metals. Oxidation always takes place at the

anode. Therefore, the metal undergoes deterioration specifically at the anodic regions. Thus, this statement is also

correct. Since both statements are factually and theoretically sound, Option (A) is the correct choice.