DENTAL Materials (Tarnish , Corrosion ) by Mohamed Tarek / Ibrahim Mostafa Nooh
1. Corrosion of metals involves
Temperature
Solute concentration
(c) Both
None
Corrosion of metals involves
Chemical Reaction
Physical Reaction
Physical Reaction only
Chemical Reaction only
Passivity is due to
High EMF
Low EMF
Oxide Film
None
When Pt and Co are electrically connected, which one gets corroded
Co
Pt
None
Cant Decide
Dry corrosion is also called as
Chemical corrosion
Electrochemical corrosion
Wet corrosion
Oxidation corrosion
Anhydrous inorganic liquid metal surface in absence of moisture undergoes
Wet corrosion
Dry corrosion
Galvanic corrosion
Pitting corrosion
Corrosion between the dissimilar metals is called as
Galvanic corrosion
Dry corrosion
Oxidation corrosion
Concentration cell corrosion
Wet corrosion is also called as
Chemical cell
Electro chemical cel
Oxidation reaction
Liquid metal corrosion
Which of the following comes under the wet corrosion?
Corrosion by other gases
Liquid metal corrosion
Oxidation corrosion
Concentration cell corrosion
Corrosion along the grain boundaries is called as
Stress Corrosion
Inter granular corrosion
Stress Cell Corrosion
None
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