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Rusting of iron in neutral aqueous solution of electrolyte occurs in the presence of oxygen with the evolution of ___________

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Rusting of iron in neutral aqueous solution of electrolyte occurs in the presence of oxygen with the evolution of ___________

(a) Nitrogen

(b) Chloride

(c) Sulphide

(d) Hydrogen

I have been asked this question by my school teacher while I was bunking the class.

The question is from Wet Theory of Corrosion in division Corrosion, Electrolysis, Fuel Cells and Batteries of Engineering Chemistry II

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The correct answer is (d) Hydrogen

Explanation: Rusting of iron in neutral aqueous solution of electrolyte occurs in the presence of oxygen with the evolution of hydrogen. Only hydrogen gas is evolved in this process.

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