The difference in potential between two standard half cells is ΔE°. If the half cell are galvanically coupled, the value of ΔE°, with changes in concentration of ions in the solution, is such that
A. ΔE° decreases with increase in concentration of the ions
B. ΔE° increases linearly with increase in concentration of the ions
C. ΔE° increases exponentially with increase in concentration of the ions
D. ΔE° is constant
Answer: Option C
This Question Belongs to Metallurgical Engineering >> Electrometallurgy And Corrosion
Intergrannular corrosion of light 18-8 stainless steel can not be prevented by
A. reducing the carbon content to less than 0.05%
B. quenching it from high temperature to prevent chromium carbide precipitation
C. adding strong carbide forming elements
D. increasing the carbon content
Which of the following metals is highest noble in the Galvanic series?
A. Platinum
B. gold
C. graphite
D. titanium
Difficult to monitor and very dangerous form of corrosion
A. Galvanic
B. Pitting
C. Crevice
D. Stress
A. Zn, Fe, Pt, Cu
B. Pt, Zn, Cu, Fe
C. Fe, Pt, Cu, Zn
D. Pt, Cu, Fe, Zn
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