in case of dry corroison if the protective film formed is porous                   

Related MCQs

• due to brakege of protective film the type of corrosion which takes palce is known as
•                        is the phenomenon in which a metal or an alloy exibits higher corrosion resistabce than expected from its position in the electrochemical series by forming protective, thin, nonporous oxide film on the surface
• wet corroison occurs under                 conditions
• in corroison at anodic area                    
• in hydrogen evolution mechanism of corroison                   
• intergranular corroison occurs                          
• in oxygen absorption reaction mechnism os corroison                 
• the protective coatings applied to prevent corrosion should have the property of
• what is the nature of oxide film, formed on the ferrous metal due to reaction with atmosphere?
• what is nature of oxide film formed on the aluminium and copper metal due to reaction with atmosphere