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The ____________ is the simplest corrosion produced by means of chemical attack.(a) Electrolytic theory(b) Chemical action theory(c) Galvanic action theory(d) High temperature oxidationThis question was addressed to me during a job interview.The doubt is from Cement Concrete Construction in division Cement Concrete Construction of Construction & Building Materials

Answer»

The correct option is (b) Chemical action theory

For explanation: Chemical action theory or DIRECT corrosion includes oxidation in which the OXYGEN of atmosphere COMBINES with all or PART of SURFACE of a material. In this the combined action of oxygen, carbon dioxide and moisture on steel results in corrosion or rust.



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