ANS:A - Corrosion in organic liquids.

Corrosion in organic liquids does not come under the category of electrochemical corrosion. Electrochemical corrosion involves the exchange of electrons between different parts of a metal surface immersed in an electrolyte solution. This process typically involves anodic reactions (loss of electrons, leading to metal dissolution) and cathodic reactions (gain of electrons, often involving reduction of oxygen or other substances). Corrosion in organic liquids, on the other hand, may occur through mechanisms such as chemical attack, solvent action, or degradation due to exposure to certain organic compounds. While electrochemical processes can still play a role in some cases involving organic liquids, corrosion in such environments is not primarily driven by electrochemical reactions as it is in typical electrochemical corrosion scenarios like atmospheric corrosion, soil corrosion, and corrosion in seawater or molten metals.