Multiple choice

Which of the following statements is/are true about corrosion?

  1. In an electrochemical corrosion, corrosion occurs at anode, but rust is deposited at the cathode.
  2. Dry corrosion is slow process while wet corrosion is a fast process.
  3. In an 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.

  1. Only 1, 2 and 3

  2. Only 2, 3 and 4

  3. Only 1, 3 and 4

  4. Only 1, 2 and 4

  5. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct because all are true. In an electrochemical corrosion, corrosion occurs at the anode but rust is deposited at the cathode, dry corrosion is slow process while wet corrosion is a fast process, and it involves direct attack of the chemicals on the metal surface.

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