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Passivity is achieved only if a sufficient quantity of oxidizer is added to the medium.

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Passivity is achieved only if a sufficient quantity of oxidizer is added to the medium.

(a) True

(b) False

This question was addressed to me in unit test.

This interesting question is from Corrosion Principles topic in chapter Corrosion Principles of Corrosion Engineering

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Correct option is (a) True

The explanation: In practical cases, the corrosion rate is estimated based on the current density generated. We know that the current density increases with the increase in oxidizer concentration and passivity will only be achieved when the current density crosses critical current density value (ic).

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