Multiple choice

Identify the incorrect statement.

  1. In electrochemical corrosion, corrosion occurs at anode but rust is deposited at cathode.

  2. Dry corrosion is a slow process while wet corrosion is a fast process.

  3. In electrochemical corrosion, corrosion does not depend on the size of the anodic part of the metal.

  4. Dry corrosion involves direct attack of the chemicals on the metal surface.
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C Correct answer
Explanation

In electrochemical corrosion, corrosion depends on the size of the anodic part of the metal. Smaller area of anode as compared to cathode will lead to faster corrosion.

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