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Which of the following parameter of electrolyte decreases the corrosion rate?

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Which of the following parameter of electrolyte decreases the corrosion rate?

(a) Dissolved oxygen

(b) Temperature

(c) High electrical resistance

(d) Presence of ferric ions

I had been asked this question in an interview for job.

The question is from Corrosion Principles in portion Corrosion Principles of Corrosion Engineering

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Right option is (c) High electrical resistance

Explanation: The Function of an electrolyte is to transfer the ions between anode and cathode. Increase in electrical resistance in electrolyte shows obstruction for the free flow of ions, hence the corrosion rate decreases. Whereas dissolved oxygen, temperature and presence of ferric ions increases the mobility of ions and increases the corrosion rate.

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